Tomb Raider II
Make sure Lara is not holding a flare. Move one step forward (using Shift), one step back (Shift again), rotate to the right in three full circles (Shift once more), then jump back (using Alt).
Contributed By: th3l3fty.
When playing a level, pull out a flare, then do the following: Step forward, step backward, three complete turns and do a back flip. You will then get all the weapons.
Contributed By: Exodist.
When playing a level pull out a flare, then do the following: one step forward (holding shift), one step back (holding shift), rotate (to any direction) three full circles, jump forward.
Contributed By: vglalves.