Cheats:
Go to the Main Menu where it says Play, Options, and Extras. Hold LT, RT, LB, and RB and input DOWN, UP, YELLOW, BLUE, DOWN, DOWN, YELLOW, YELLOW. A new option should appear under Extras labeled Cheat. If you select Cheat, a text window will appear and you can enter these codes:

KKmuseum - All Extras Unlocked
KKst0ry - All Levels Unlocked
KK 999 mun - 999 Bullets
8wonder - Rapid healing for Jack only
GrosBras - One-Hit Kills (bullets only)
KKsn1per - Give 50 rounds for the sniper rifle and equips it
KKcapone - Give 500 rounds for Thomspon gun and equips it
lance 1nf - Unlimited Spears (reload to spawn spear, note 1nf uses numeral one, space between phrases) (Unverified)


The text "HOOT FORT" appears in the upper left of the screen during a mission when a cheat code is in effect.

Hint: Point Scoring System
The scoring system that in the game exists only after youve obtained 100% in the game, have saved your file, and go back to the Play option in-game. With it, you can not only judge how well you play the game (the high score on each stage is 20,000 points, which is actually rather difficult to attain on many levels), but it also has a greater use - it enables you to unlock things in the game, including a brand new ending. The system works something like this:
Each level in the game when going for a score is the same as it was before you beat the game. Your score is partly earned and partly inherent. In other words, some of your score is given to you, but other parts of it are earned. The only given here is your Chapter Bonus which varies from stage to stage. Itll usually make up at least half of your score, however. The other points are divvied out like this:

CIRCUMSTANCE POINT VALUE
Big Predators Killed +5,000 Points
Big Predators Killed +1,000 Points
Big Predators Killed +500 Points
Bullets Used -100 Points
Spears Used -20 Points
Deaths -5,000 Points
Injuries -1,000 Points
Friends Injured -1,000 Points
Attacks Attempted (KK) -25 Points
Time Per Second (KK) -10 Points