Tomb Raider: Underworld - Invincibility

Invincibility:
While playing, hold LT and press A, RT, Y, RT, X, LB.

One hit kills:
While playing, hold LT and press Y, A, Y, X, LB, B.

Reveal enemy health:
While playing, hold LT and press X, B, A, LB, RT, Y.

February 11, 2009 - 8:25am