In the Ammo Depot of Unit 2, You'd hear some Metallic scrapping. Only just to realize that it was none-other than a Berserker.

It would then spot you, getting ready to charge at you with its Hammer Arm.

TRESPASSER!! It shouted at you, Charging at you with its Hammer Arm.

You know the drill, You'd better deal of this guy quickly! Any weapon will do, Get rid of this deadly freak!

It's probably gonna turn ya into Mincemeat!