Kombat Koin Cheat
If you dont care about what your name is in the profile, enter KWIKKASH as your name and you start with 25,000 kombat koins.

Krypt Kontents
Here is what is in each and every Krypt in the game:

Prissy Kitana	AA
Kitana	AB
Diva Li Mei	AC
Arena- The Portal	AD
Free Test Your Might	AE
+ 50 Koins	AF
Reptile Scorpion	AG
Commando Jax	AH
Quan Chi	AI
Goth Kung Lao	AJ
Golden Rose Kung Lao	AK
Fly Girl Sonya	AL
Goth Frost	AM
Anime Sonya	AN
Chrome Jax	AO
Arena- House of Pekara	BA
Reaper Scorpion	BB
Smoke Scorpion	BC
Sub-Zero	BD
Goth Scorpion	BE
Irish Rose Li Mei	BF
Gamma Jax	BG
Goth Kenshi	BH
Free Test Your Might	BI
Select Arcade Mode Arena	BJ
Anime Kano	BK
Kry Baby Kung Lao	BL
Flaming Frost	BM
Goth Quan Chi	BN
Thermal Mode	BO
Ermac Scorpion	CA
Hippy Li Mei	CB
Goth Shang Tsung	CC
Evergreen Shang Tsung	CD
+ 500 Koins	CE
Vlad Shang Tsung	CF
Armored Kenshi	CG
Skin-Suit Kitana	CH
Purple Quan Chi	CI
Anime Scorpion	CJ
Demon Quan Chi	CK
Suntan Quan Chi	CL
Black Knight Kenshi	CM
Stone Sub-Zero	CN
VB Mode	CO
Piotr Kano	DA
Icy Frost	DB
Denim Dream Kano	DC
Akano Kano	DD
Goth Kitana	DE
Wood Shaman Kung Lao	DF
Colorblind Kenshi	DG
Handyman Shang Tsung	DH
Technicolor Shang Tsung	DI
Reaper Quan Chi	DJ
Anime Kitana	DK
+ 200 Koins	DL
Royal Shang Tsung	DM
Scorpio Sub-Zero	DN
Goth Sonya	DO
Goth Jax	EA
Anime Li Mei	EB
Anime Quan Chi	EC
Anime Kung Lao	ED
Anime Frost	EE
Jade Kitana	EF
Rogue Sonya	EG
Xeno Kano	EH
Justice Kenshi	EI
Anime Shang Tsung	EJ
White Kight Kenshi	EK
Undercover Jax	EL
Snowy Frost	EM
Goth Li Mei	EN
Kano	EO
Hyper Blue Frost	FA
Krypt Rayder Sonya	FB
+ 1000 Koins	FC
Mandarin Li Mei	FD
Solid Kenshi	FE
Shang Tsung	FF
Patriotca Li Mei	FG
80s Sonya	FH
Private Kano	FI
Gold Quan Chi	FJ
Arena- The Swamp	FK
Red Sonya	FL
Krazy Survival Kolors	FM
Scorpette Frost	FN
Anime Jax	FO
Golden Jax	GA
Happy Raver Frost	GB
Anime Sub-Zero	GC
+ 100 Koins	GD
+ 250 Koins	GE
Fahrenheit Sub-Zero	GF
Anime Kenshi	GG
Captain Sub-Zero	GH
Goth Sub-Zero	GI
Alien Quan Chi	GJ
Goth Kano	GK
Black Jax	GL
Kung Pao Kung Lao	GM
Reaper Kung Lao	GN
Parliament Shang Tsung	GO
Celcius Scorpion	HA
Krazy Kredits	HB
Wild West Kung Lao	HC
Leather Kitana	HD
Arena- Spy Facility	HE
Iced Sub-Zero	HF
Classic Mode	HG
Night Vision Mode	HH
Lace Kitana	HI
Lemon Li Mei	HJ
Storm Scorpion	HK
Classic Sonya	HL
Disco King Kano	HM
Reaper Sub-Zero	HN
Tart Kitana	HO

Characters
If you want to unlock the following characters, you need to complete the specified challenges:

Kano	Beat Arcade Mode on Hard
Kitana	Beat Arcade Mode on Very Easy
Quan Chi	Beat Arcade Mode on Very Difficult
Shang Tsung	Beat Arcade Mode on Difficult
Sub Zero	Beat Arcade Mode on Normal