I have to admit: the final level was underwhelming. With no hostages/vip's, there's nothing to stop the player from leveling the area with artillery or a heli-r from out of range, or just rushing them with a tank.
I beat bugzilla with the riot shield, alien gun, firefighter (for the drowsiness immunity), and scientist for the damage. My strategy was basically "use bug repellent then spam the second attack and use medkits at 50% hp", and I used up about 50 or 60 ammo.
I could really go for a way to drop your current explosive in a non-explodey way... If I there's a bomb I want more on the ground, the only way I can get it is to throw my current one. (unless i'm just being an idiot who missed that part of the controls)
I think the game needs a bit of balancing work: The normal sniper rifle pierces just as well as the rare version, making the rare's slower fire rate a straight downgrade (and 1 less damage than the shop one), the lvl 10 rare chainsaw is lower DPS than the lvl 9 rare katana, and the "mega-boss" dies from 3-4 sniper shots.
I think the combat shotgun is ridiculously OP... with 3 points in "trigger happy", the reloads are practically instant, so you have a constant field of almost instadeath wherever your mouse is. The only things it actually takes time to kill are aliens and golems (when fully upgraded), but the AOE means you still kill everything that passes by them as well. This was in hard mode...
I think the pheonix's Rebirth needs a brief invincibility time or something. If you have libra's curse you die anyway because your energy is zero, and if you have zodiac's curse you die from whatever killed you the first time, because you're still in the way and still have 1 hp.
Minicliper133, how can you complain about the levels all being the same while only having played about 1/4 of the levels? That's a horrible place to review from.
Mildly amusing, but definitely NOT intellectually challenging in the slightest bit. Try adding something in to confuse the player, the solutions are mostly glaringly obvious...
 "Diamond Hollow II"){kind=icon}
 "City Siege"){kind=icon}
 "Toxers"){kind=icon}
 "Ministry of War"){kind=icon}
 "Hostage Crisis"){kind=icon}
 "Rage Arena"){kind=icon}
 "Bloody Sunset"){kind=icon}
 "The Duder Dilemma"){kind=icon}
 "Wings of Genesis"){kind=icon}
 "Gravity Duck"){kind=icon}
 "Book of Mages: The Dark Times"){kind=icon}
 "Heir"){kind=icon}
 "Epic Coaster"){kind=icon}
 "Dino Strike"){kind=icon}
 "Kongregate Chat"){kind=icon}
 "King of Shapes"){kind=icon}
 "Kongai Launch"){kind=icon}
 "Remnants of Skystone"){kind=icon}