MKWarehouse: Mortal Kombat X: Kombat Kard Backgrounds

Mortal Kombat X

Kombat Kard Backgrounds

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Welcome: Play Mortal Kombat X
5 Koins per Match Win

Punching Bag: Spend 1 hour in practice mode
15 XP per Kombo Breaker performed
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Sparring Partner: Spend 2 hours in practice mode
50 XP per Brutality performed

Dedicated: Complete 10 Traditional Towers
50 XP per Match Win
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Daily Warrior: Complete 25 Daily Towers
75 XP per Match Win

Turn n' Burn: Complete 25 Hourly Towers
100 XP per Match Win

Glamorous: Complete The Cassie Tower
75 XP per Match Win (as Cassie Cage)

Infested: Complete The D'Vorah Tower
75 XP per Match Win (as D'Vorah)
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Soul Chamber: Complete The Ermac Tower
75 XP per Match Win (as Ermac)

Wrecking Ball: Complete The Ferra/Torr Tower
75 XP per Match Win (as Ferra/Torr)

Shokan Warrior: Complete The Goro Tower
75 XP per Match Win (as Goro)

Honorable Discharge: Complete The Jacqui Tower
75 XP per Match Win (as Jacqui Briggs)
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Wounded Soldier: Complete The Jax Tower
75 XP per Match Win (as Jax)

Prime Time: Complete The Johnny Cage Tower
75 XP per Match Win (as Johnny Cage)

Criminal: Complete The Kano Tower
75 XP per Match Win (as Kano)

Swordsman: Complete The Kenshi Tower
75 XP per Match Win (as Kenshi)
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Royalty: Complete The Kitana Tower
75 XP per Match Win (as Kitana)

Kahn: Complete The Kotal Kahn Tower
75 XP per Match Win (as Kotal Kahn)

Unchained: Complete The Kung Lao Tower
75 XP per Match Win (as Kung Lao)

Balanced: Complete The Kung Jin Tower
75 XP per Match Win (as Kung Jin)
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Chosen One: Complete The Liu Kang Tower
75 XP per Match Win (as Liu Kang)

Sadistic: Complete The Mileena Tower
75 XP per Match Win (as Mileena)

Sinister: Complete The Quan Chi Tower
75 XP per Match Win (as Quan Chi)

Protector: Complete The Raiden Tower
75 XP per Match Win (as Raiden)
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Parasite: Complete The Reptile Tower
75 XP per Match Win (as Reptile)

Outlaw: Complete The Erron Black Tower
75 XP per Match Win (as Erron Black)

Specter: Complete The Scorpion Tower
75 XP per Match Win (as Scorpion)

Polar: Complete The SubZero Tower
75 XP per Match Win (as Sub-Zero)
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Conjuring: Complete The Shinnok Tower
75 XP per Match Win (as Shinnok)

Patriot: Complete The Sonya Tower
75 XP per Match Win (as Sonya Blade)

Whiplash: Complete The Takeda Tower
75 XP per Match Win (as Takeda)

MK I: Complete The MK I Tower
100 Koins per Fatality performed
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MK II: Complete The MKII Tower
100 Koins per Fatality performed

MK III: Complete The MKIII Tower
100 Koins per Fatality performed

MK IV: Complete The MK IV Tower
100 Koins per Fatality performed

MK IX: Complete The MK IX Tower
100 Koins per Fatality performed
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Painful: Complete The Pain of Syed Tower
100 Koins per Fatality performed

For the Shaolin: Complete The Shaolin Monks Tower
200 XP per Brutality performed

Fire and Ice: Complete The Fire And Ice Tower
200 XP per Brutality performed

The Impossible: Complete The Impossible Tower
200 XP per Brutality performed
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Money Hungry: Complete the Money Grab Tower
200 Koins per Brutality performed

Murderer: Complete The Jason Tower
100 XP per Match Win (as Jason)

Jinx: Complete The Tanya Tower
150 XP per Match Win (as Tanya)

Sport Kill: Complete The Predator Tower
200 XP per Match Win (as Predator)
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Earthquake: Complete The Tremor Tower
250 XP per Match Win (as Tremor)

Xenomorph: Complete The Alien Tower
250 XP per Match Win (as Alien)

Drunken Fist: Complete The Bo' Rai Cho Tower
250 XP per Match Win (as Bo' Rai Cho)

Merciless: Complete The Leatherface Tower
250 XP per Match Win (as Leatherface)
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Advanced Robotics: Complete The Triborg Tower
250 XP per Match Win (as Triborg)

Ho Ho Ho: Complete The Christmas Tower
150 Koins per Fatality performed

Funny Bunny: Complete The Easter Tower
150 Koins per Fatality performed

Honor The Fallen: Complete the 4th of July Tower
150 Koins per Fatality performed
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Spooky Spooky: Complete The Halloween Tower
150 Koins per Fatality performed

Fooled: Complete The April Fools Day Tower
150 Koins per Fatality performed

Happy St. Patrick's Day: Complete The St. Patrick's Day Tower
150 Koins per Fatality performed
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Happy Valentine's Day: Complete The Valentines Day Tower
150 Koins per Fatality performed

Gobble Gobble: Complete the Thanksgiving Tower
200 Koins per Fatality performed

Party Time: Complete the New Year Tower
250 Koins per Fatality performed
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Who's Next: Complete the Who's Next Tower
+200 XP per Match Win

Half Way: Complete 50% of Story Mode
25 XP per Stage Interaction performed
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Completionist: Complete 100% of Story Mode
50 XP per Stage Interaction performed

Unhinged: Perform 10 Fatalities
50 XP per Fatality performed
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Carnage: Perform 50 Fatalities
100 XP per Fatality performed

Massacre: Perform 100 Fatalities
150 XP per Fatality performed

Finisher: Perform 250 Fatalities
200 XP per Fatality performed

Overpowered: Perform 10 Brutalities
50 XP per Brutality performed
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Blood Thirsty: Perform 50 Brutalities
100 XP per Brutality performed

Uncontrollable: Perform 100 Brutalities
150 XP per Brutality performed

Brutal Ending: Perform 250 Brutalities
200 XP per Brutality performed

The Suffering: Perform 10 Faction Kills
10 FXP per Faction Kill
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Annihilation: Perform 50 Faction Kills
25 FXP per Faction Kill

Humiliation: Perform 100 Faction Kills
50 FXP per Faction Kill

Tortured Soul: Perform 250 Faction Kills
100 FXP per Faction Kill

Lawless: Perform 100 Stage Interactions
50 XP per Stage Interaction performed
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Nighty Night: Perform 250 Stage Interactions
100 XP per Stage Interaction performed

Fighting Chance: Perform 50 Kombo Breakers
50 XP per Kombo Breaker performed
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Full Strength: Perform 100 Kombo Breakers
100 XP per Kombo Breaker performed

Breaker: Perform 200 Kombo Breakers
200 XP per Kombo Breaker performed

Skull Shatter: Perform 25 X-Rays
50 XP per X-Ray performed
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Head Trauma: Perform 50 X-Rays
75 XP per X-Ray performed

Skull Krusher: Perform 100 X-Rays
100 XP per X-Ray performed

Clean Break: Perform 200 X-Rays
200 XP per X-Ray performed

Kombat Kard Characters Backgrounds

Hidden in The Krypt, wage koins in the Shrine of the Dead

Poisonous Strike: Hidden in the Krypt
75 Koins per Match Win
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Arctic Blast: Hidden in the Krypt
75 Koins per Match Win

Death Squad: Hidden in the Krypt
75 Koins per Match Win

Lone Gunman: Hidden in the Krypt
75 Koins per Match Win

The Enforcer: Hidden in the Krypt
75 Koins per Match Win
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The Rage: Hidden in the Krypt
75 Koins per Match Win

Death To All: Hidden in the Krypt
75 Koins per Match Win

Scorched: Hidden in the Krypt
75 Koins per Match Win

Final Cut: Hidden in the Krypt
75 Koins per Match Win

Edenian Prince: Hidden in the Krypt
75 Koins per Match Win
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Team Work: Hidden in the Krypt
75 Koins per Match Win

Turn it Up: Hidden in the Krypt
75 Koins per Match Win

Showtime: Hidden in the Krypt
75 Koins per Match Win

Cold Front: Hidden in the Krypt
75 Koins per Match Win

Shokan Way: Hidden in the Krypt
75 Koins per Match Win
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Deep Anger: Hidden in the Krypt
75 Koins per Match Win

Thunder Storm: Hidden in the Krypt
75 Koins per Match Win

Jaded: Hidden in the Krypt
75 Koins per Match Win

Revenge: Hidden in the Krypt
75 Koins per Match Win

Hidden Agenda: Hidden in the Krypt
75 Koins per Match Win
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Ice Storm: Hidden in the Krypt
75 Koins per Match Win

Acid Mouth: Hidden in the Krypt
75 Koins per Match Win

Tele-Push: Hidden in the Krypt
75 Koins per Match Win

New Regime: Hidden in the Krypt
75 Koins per Match Win

Eternal Scar: Hidden in the Krypt
75 Koins per Match Win
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Red Dragon: Hidden in the Krypt
75 Koins per Match Win

Shokan Blast: Hidden in the Krypt
75 Koins per Match Win

Blood Offering: Hidden in the Krypt
75 Koins per Match Win

Inner Beauty: Hidden in the Krypt
75 Koins per Match Win
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Dark Magic: Hidden in the Krypt
75 Koins per Match Win

Getting Started: Defeat 5 Survivors
50 XP per Fatality performed
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Cybernetic Advancements: Defeat 15 Survivors
75 XP per Fatality performed

Silenced: Defeat 25 Survivors
100 XP per Fatality performed

Oni Blood: Win 25 Survivor Matches
25 FXP per Match Win

Sektor Lives: Win 50 Survivor Matches
50 FXP per Match Win
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Bubblegum and Kisses: 3 game Win streak as the Survivor
25 Koins per X-Ray performed

Hidden Evil: 10 game Win streak as the Survivor
50 Koins per X-Ray performed

Meat: 15 game Win streak as the Survivor
75 Koins per X-Ray performed

Jaw Breaker: Dethrone 5 Kings
50 XP per Fatality performed
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Eye To Eye: Dethrone 10 Kings
75 XP per Fatality performed

Enternal Battle: Dethrone 25 Kings
100 XP per Fatality performed

King's Throne: Dethrone 50 Kings
200 XP per Fatality performed

Ka Ballin': 3 game Win streak as King
10 Koins per X-Ray performed
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Ninja Mime: 10 game Win streak as King
20 Koins per X-Ray performed

Tanya: 15 game Win streak as King
30 Koins per X-Ray performed

Wind God: 25 game Win streak as King
75 Koins per X-Ray performed

Where Theres Smoke: 10 KOTH Wins
25 FXP per Match Win
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Easy Living: 25 KOTH Wins
50 FXP per Match Win

Cyrax: 50 KOTH Wins
75 FXP per Match Win

Queen Sindel: 100 KOTH Wins
100 FXP per Match Win

The Watcher: Win 1 Team Battle
10 FXP per Faction Kill
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Dark Army: Win 5 Team Battles
25 FXP per Faction Kill

The Forgotten: Win 10 Team Battles
50 FXP per Faction Kill

Sinful: Win 25 Team Battles
75 FXP per Faction Kill

Dry Heat: Get first place in Towers Battles (1 Time)
50 XP per Match Win
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The Mist: Get first place in Towers Battles (5 Times)
75 XP per Match Win

Skull Rock: Do 50 hits of damage against an Invasion Boss
25 FXP per Match Win
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Hit The Floor: Do 100 hits of damage against an Invasion Boss
50 FXP per Match Win

Cold Funeral: Do 250 hits of damage against an Invasion Boss
75 FXP per Match Win

Evil Awaits: Complete 1 Invasion Tower
50 FXP per Fatality performed

The Offering: Complete 5 Invasion Towers
75 FXP per Fatality performed
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The Needy: Win 1 secret Assassin Battle
25 FXP per Match Win

Ancient Runes: Win 5 secret Assassin Battle
50 FXP per Match Win

Thunder And Hate: Win 10 secret Assassin Battle
75 FXP per Match Win

Hazardous Tides: Achieve 50 Respect points
10 XP per Stage Interaction performed
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One Ruler: Achieve 100 Respect points
25 XP per Stage Interaction performed

Abandonment: Achieve 250 Respect points
50 XP per Stage Interaction performed

Elder God's Wrath: Contribute 100 War Points to a Faction
15 FXP per Faction Kill
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Devil's Serpent: Contribute 250 War Points to a Faction
25 FXP per Faction Kill

Grave End: Contribute 500 War Points to a Faction
50 FXP per Faction Kill

Wrath Hammer: Contribute 1000 War Points to a Faction
75 FXP per Faction Kill

The Truth: Contribute 2000 War Points to a Faction
100 FXP per Faction Kill
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Burner: Contribute 5000 War Points to a Faction
200 FXP per Faction Kill

Slithering: Finish a 2X Currency Ladder on MKX Mobile
50 XP per Fatality performed
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Two Sided: Complete 1st Bracket on MKX Mobile
50 FXP per Brutality performed

Bounty: Break 5 Test Your Might Objects on MKX Mobile
50 Koins per Match Win

Dark Plans: Complete 6th Bracket on MKX Mobile
50 Koins per Faction Kill

War Champion I: Faction War Week 1 Winner
50 Koins per Faction Kill
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War Champion II: Faction War Week 2 Winner
65 Koins per Faction Kill

War Champion III: Faction War Week 3 Winner
75 Koins per Faction Kill

War Champion IV: Faction War Week 4 Winner
100 Koins per Faction Kill

War Champion V: Faction War Week 5 Winner
150 Koins per Faction Kill
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War Champion VI: Faction War Week 6 Winner
200 Koins per Faction Kill

War Champion VII: Faction War Week 7 Winner
250 Koins per Faction Kill

War Champion VIII: Faction War Week 8 Winner
300 Koins per Faction Kill

War Champion IX: Faction War Week 9 Winner
350 Koins per Faction Kill
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War Champion X: Faction War Week 10 Winner
400 Koins per Faction Kill

War Champion XI: Faction War Week 11 Winner
450 Koins per Faction Kill

War Champion XII: Faction War Week 12 Winner
500 Koins per Faction Kill

War Champion XIII: Faction War Week 13 Winner
600 Koins per Faction Kill
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War Champion XIV: Faction War Week 14 Winner
700 Koins per Faction Kill

Reach Level 50 in all factions
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Refugee Kamp: Reach XP Level 5
5 Koins per Match Win
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Emperor's Courtyard: Reach XP Level 10
10 Koins per Match Win

Destroyed City: Reach XP Level 15
15 Koins per Match Win

Netherrealm Crossroads: Reach XP Level 20
20 Koins per Match Win

Outworld Marketplace: Reach XP Level 25
25 Koins per Match Win
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Sky Temple: Reach XP Level 30
35 Koins per Match Win

Quan Chi's Fortress: Reach XP Level 35
40 Koins per Match Win

Lin Kuei Temple: Reach XP Level 40
45 Koins per Match Win

Kuatan Jungle: Reach XP Level 45
50 Koins per Match Win
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Dead Woods: Reach XP Level 50
60 Koins per Match Win

Jinsei Chamber: Reach XP Level 55
70 Koins per Match Win

Lava Pits: Reach XP Level 60
80 Koins per Match Win

Deadly Storm: Reach XP Level 70
100 Koins per Match Win

Deadly Storm: Reach XP Level 70
100 Koins per Match Win
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Dark Forest: Reach XP Level 75
125 Koins per Match Win

Infected Dead Woods: Reach XP Level 80
150 Koins per Match Win

Holy Shrine: Reach XP Level 85
175 Koins per Match Win

Training: Reach XP Level 90
200 Koins per Match Win

Living Forest: Reach XP Level 95
250 Koins per Match Win
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Edenia: Reach XP Level 100
300 Koins per Match Win

Tigor: Win a Ranked 1v1 Match
10 XP per Match Win
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Fathers Scales: Win 5 Ranked 1v1 Matches
20 XP per Match Win

Lost Kahn: Win 10 Ranked 1v1 Matches
35 XP per Match Win

Baraka: Win 25 Ranked 1v1 Matches
40 XP per Match Win

Rain: Win 50 Ranked 1v1 Matches
65 XP per Match Win

Dead Queen: Win 100 Ranked 1v1 Matches
100 XP per Match Win
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Nightwolf: Win 250 Ranked 1v1 Matches
150 XP per Match Win

Noob: Win 500 Ranked 1v1 Matches
200 XP per Match Win

Win a match in Single Fight
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Learning To Win: Win 5 Player 1v1 Matches
10 XP per Match Win
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Blue Flame: Win 10 Player 1v1 Matches
25 XP per Match Win

The Damned: Win 25 Player 1v1 Matches
35 XP per Match Win

Stryker: Win 50 Player 1v1 Matches
50 XP per Match Win

Bo' Rai Cho: Win 100 Player 1v1 Matches
75 XP per Match Win

Reiko: Win 250 Player 1v1 Matches
100 XP per Match Win
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Shao Kahn: Win 500 Player 1v1 Matches
200 XP per Match Win

Dead Scales: Smash 1 Test Your Might Object
10 XP per Kombo Breaker performed
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Sacred Gods: Smash 5 Test Your Might Object
10 FXP per Stage Interaction performed

The Beast: Smash 10 Test Your Might Object
10 Koins per X-Ray performed

Kamidogu: Smash through the Test Your Might Tower
20 XP per Kombo Breaker performed

Caged: Complete the Johnny Cage QTE perfectly
25 Koins per Kombo Breaker performed
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Osh-Tekk Warrior: Complete the Kotal Kahn QTE perfectly
25 Koins per Stage Interaction performed

Perfect Aim: Complete the Kung Jin QTE perfectly
25 Koins per X-Ray performed

Hardcore: Complete the Sonya Blade QTE perfectly
50 Koins per Kombo Breaker performed
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Infestation: Complete the D'Vorah QTE perfectly
50 Koins per Stage Interaction performed

Disturbance: Complete the Takeda QTE perfectly
50 Koins per X-Ray performed

Get Some: Complete the Jax QTE perfectly
75 Koins per Kombo Breaker performed

Hanzo: Complete the Scorpion QTE perfectly
75 Koins per Stage Interaction performed
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Perfectionist: Complete all Story Mode QTE sequences perfectly
100 Koins per Match Win

Special backgrounds

Unknown unlock conditions, drop me a tweet if you have any of those unlocked and what conditions you fulfilled to unlock them.
After much research I've come to the conclusion that these backgrounds are either super special and awarded directly from WB as a prize or something or they were cut from the final game.