nice work,this game is epic,nic sounds and graphics :)
there's no clear data, so if you miss a medal you have to clear your entire cache along with all other games to get it back. A rather poor design for a game.
I've just implemented a change that should help with this.
Go left from the title screen into the achievement locker. If you shoot a panel for any achievement you have already unlocked but missed the medal for, it should give you the medal. Hope that helps!
Also, as a general tip, if you want to get around Flash Game saves like that, one thing you can do is play in private browsing mode. It won't remember any of your save data so you can go get achievements again, or play games like One Chance over again without erasing all your saves. You can also try playing in a different browser if you've got two or more browsers installed.
Really fun and simple!
Excessively fun, I adore this. Primarily due to the quips in the background...Kept me smiling, so no enjoyment was lost. While I wasn't exactly swearing, or sweating, it was a startlingly brilliant hands-on shooter...Along with that, bashing aliens with doors. *Doors*. X3