All controls can be reconfigured, other than moving the mouse to move the camera:

W or Up Arrow: Move Forward

A or Left Arrow: Move Left

S or Down Arrow: Move Back

D or Right Arrow: Move Right

Spacebar: Jump/Jetpack

Left Click: Fire

Right Click: Alt Fire

1: Weapon 1

2: Weapon 2

Mouse Wheel: Change Weapons

R: Reload/Special

Q or Mouse Button 5: Ultimate (Qtility)

E or Mouse Button 4: Melee

Left Shift: Thrust Down (Fall Faster). Hold to activate Sliding (maintains momentum, but hard to turn)

F: Class Specific Bomb (F-Bomb)

T: Chat

G: Team Chat

C: Switch to Class Select

Tab: Switch to Team

O: Switch to Settings