Trainer options:

F1 - Activate Trainer
F2 - God Mode
F3 - Infinite Oxygen (Can be used for running as well as summing)
F4 - Infinite Ammo (Means the throwable stuff like spears ,arrows ..etc)
F5 - Super Speed (Should only be activated once you enter the game and start moving in it .)
F6 - Mega Exp (You get 100X Exp on each kill)
F7 - Infinite Skill Points
F8 - UnDetected (You won't be detected by other human eating AI)
F9 - Super Accuracy
F10 - No Recoil
F11 - Infinite Timer
F12 - Infinite Torch
Numpad 1 - Infinite Resources (Your resources will not decrease when crafting stuff)