Hey check out my latest game, is about zombies, monsters and freaks! i hope you like it, here goes the Features:

-28 levels. Plus 2 hiden bonus levels.
-8 different weapons.
-over 40 upgades (Weapon Upgrades, Fortress Upgrades)
-16 different enemies.
-More than 30 achievements.
- 5 hiden cheats!
-medals.
-and much more.

have look http://www.newgrounds.com/portal/view/
527804

i hope you like it!