How about Playing Mayhem Area? In this game you have to survive by killing zombies. Make good use of the help, the ammo is very limited!
W to Jump A to Left D to Right Left Click to Fire
Caver
Balls
Amgel
Magic
Pregn
Delic
Chris
Numbl
Save
Tap M
March
The G
Crazy
Princ
A1 Ci
Cut T
Reap
Super
Troll
Singe
Box R
Block
Jump
Falli
Xmas
Mines
Sky D
Nutty
Ticto
Onet
Helix
Crazy
Tract