I like the game, but it seems pretty riddled with bugs at this point! For starters the lag builds up easily, making it difficult to survive even the easy attacks. Some doors it seems you can pass through at random, and others not... I reached the edge of the map a few times and walked into the darkness, and then back, and couldn't get past the doorway again. This more than once. The weapon seems to switch randomly sometimes when you're loading, trying to shoot, and being attacked by a zombie. After gameplay sometimes the Play button doesn't appear, and none of the other buttons work. The medals only seem to apply for the current game session even though they refer to a Total. There doesn't seem to be any handicap for just letting zombies run past you if you can evade their attack. They just disappear at the edge of the screen.
I think it has potential, but pretty buggy! Graphics, weapons, etc looks great otherwise. Just need to polish up the gameplay, and if possible make it lighter on system resources (which really should be possible with Flash, don't know why it lags as it does). Keep up the good work!
-cd-