How about Playing Mayhem Area: Squid Wars? 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
Child
Impos
Match
Steve
Metal
Sling
Bubbl
Off T
Elect
Airpl
Color
Play
Unico
Dora
Reach
Cat A
Golem
War T
Ballo
Save
Foot
Woodt
Amgel
Hero
Bubbl
Cross
Hoov
Loop
Colle
Voodo
Block
Princ
Landm