Killing Floor/Enemies

Clot
The basic enemy.

Bloat
This enemy is larger than the other zombies, and vomits acidic bile.

Gorefast
Slightly faster than clots, and swings a metallic object as it approaches.

Crawler
A spider-like zombie.

Stalker
An invisible zombie. It is detected either by the Commando, or by a barely visible halo.

Siren
A zombie in a straight jacket, who's loud scream will inflict damage on the player.