I am beating every FPS game released for the Xbox 360.

1. Must have a single player campaign

2. Must be first person camera (no third person button)

3. Must have a physical disc release

4. Must have guns as main damage source

There are around 120 in total

(III update this when i get more info)

Xbox: Monkulas prime
PSN: Monkulasprime
Switch: Monkulas