Hand to Hand Combat
From Tomb Raider Wiki
Angel Of Darkness
For the first time ever in the Tomb Raider Series, Lara could actually use hand to hand combat. It was considered to be a last resort. If you wanted to, you could kick and punch your enemy instead of killing them with bullets.
Underworld
Abandoned for two games, the hand to hand combat returned to a lesser degree in Underworld. The hand to hand moves serve mostly as a way to trip the enemy over and give yourself some time to make a move.