you are ALWAYS running forward. deal with it.
A D or ← → strafe  ·  SPACE jump  ·  MOUSE look
LEFT CLICK swing left hand  ·  RIGHT CLICK swing right hand
HOLD a click then release → THROW that hand's weapon at a face
E grab the junk you run past (empty hands grab by themselves)
HOLD SHIFT, release → FLYING FEET-FIRST BODY SLAM through everything
P pause  ·  M mute  ·  F crunch level