help with Crysis, plz

[Rÿcher]

there's a feature you can access in your in-game environment with the third mouse button but I only have two and the feature is essential to gameplay.

What to do?

 

[Fencer]

there's a feature you can access in your in-game environment with the third mouse button but I only have two and the feature is essential to gameplay.

What to do?

The nano-suit modes can be accessed by using key presses. Check the options for suit short cuts or page 14 of the manual.