Roid Rage Psycho

Background
The Roid Rage Psycho is a creature that was created by a vicious enemy named Sludge. (Continue)

Involvement
During the quest that you go through the level (forgot) that requires you to collect Sludge's Mine Key inside a building on the top right portion on the level. At the end on the inside of the building, it is a semi-large round room that the key is located. The creature will be located at the end of the room and start to attack you, along with lots of Midget Psychos. Defeat the Roid Rage Psycho in order to collect the Mine Key.

Strategy
This enemy attacks in 2 ways, the first to traditionally use melee attacks, which causes large amount of damage. The second is a ranged attack by throwing photon grenades with a grenade mod which a grenade has exploded, 5 more grenades appear and explode. Along with lots of Midget Psychos attacking along with the Roid Rage Psycho. (Recommended to do this boss in co-op)To defeat this boss without getting damaged from the melee attacks but get attacked with grenades is to go in the back of the round room (the way you came from) and go into a hole were there is a fence in front. The boss is unable to use melee attacks, but only uses the grenade attacks that can cause lots of damage also. Bullets will NOT go through the fence, but if you have a weapon called TK Wave. The plasma shots will go through the fence and cause damage. You can anytime get out of the hole and come back in while attacking with other weapons. This enemy has no shields but large amount of health and its size make things complicated.