Smoker

The Smoker is the fourth enemy you will encounter in-game.

It can grab and trip you,making the bridge climbing part at the start of the game difficult as it can knock you into the mutation pool.

It is based off of the Smoker from Left 4 Dead,and instead of constricting the victim,it will bring them slightly closer,then trip them and let go of them,making them a very hard to fight enemy.