Unzip / Unrar trainer into your game directory, then start trainer with “pztrain.exe”, and finally start the game. During gameplay toggle trainer options by pressing the following key combinations:
Halo: Combat Evolved – Trainer (English) Free Download
1 – Infinite ‘MEGA’ Shield
2 – Infinite ‘MEGA’ Health
3 – Infinite Ammo / Grenades
4 – Infinite Flashlight
0 – Resume All Back To Normal