Trainer options Ctrl + F1 - Unlimited Health Ctrl + F2 - Unlimited Score Zombi Ctrl + F3 - Easy Kill Zombi Ctrl + F4 - No overheating Ctrl + F5 - Unlock Perks Ctrl + F6 - Perfect Accuracy Ctrl + F7 - No Recoil Ctrl + F8 - No Reload Ctrl + F9 - Unlimited Ammo