Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
NumPad1: Infinite Health
NumPad2: Infinite Stamina
NumPad3: Infinite Food
NumPad4: Infinite Water
NumPad5: Unlimited Items
NumPad6: Unlimited Ammo
You MUST run the game without anticheat.
This trainer only works for singleplayer.
Unlimited Items: While active open your inventory and all items in your inventory (not quickslot bar!) are set to 99. Remember to deactivate before crafting otherwise the new crafted item will be set to 99 as well.
Unlimited Ammo: While active you have unlimited ammo (not visible!). Just shoot, you will be able to even if you have no ammo at all.