¿did you see that Kongregate? I told to players to pay for this game and they underated my message. It seems players want free underated games instead of good 3D great games to play, but you must pay.
This game is incompleted. First achievements are hard to understand and second, it's easy to be out of hitting range with zombies and the game somehow force you to shoot.
Put your "RETRY" button in your shity head hole. Cheater!!!
If someone dies I lose him forever? F U C K you!!!
Developers like you only know how to make 1 - time game.
You are still living in SNES, no save data or what????
Hard Badge. Past 1000 kills switch time interval between waves back to 10 second. Place 2 Tazers in the entrance, boost their damage & rate to max and place additional fire rate bonus. As main weapon rockets with 2 cannons behind. Level cannon dam to max and the rocket dam & rate to max. Adjust range only to tazers and rocket turrets. When damage up BIG is unlocked surround rocket turret only with it. Big explosions are the key so set 10 seconds of interval between waves so it can be regenerated propely.
I am sorry for a developer but I think you messed up in this game. It's even hard to get to mars in 20 days. The next time do something people can play and understand. You are doing games for people not for yourself.