Overall a great idea...
... but I didn't enjoy the game at all.
- The character seems to lag for 1 second everytime I'm trying to turn around. Like I press a direction, and then 1 second later the character finally turns around.
- The score will not be determined by your skills, but by the amount of zombies that has been sent on the field, which looks like it's decided by the game. I don't like games where you only need luck to get into the high scores.
- Overall it was really easy. First time ever playing and I got gold medal. I mean, it's only turning around and spamming S for 60 seconds. The bombs were useless IMO.
- No upgrades, no levels, nothing. I understand the idea of '60 seconds gameplay', but at least make that 60 seconds worth it (Make the field a little larger with more zombies incoming maybe? Only one at a time was kinda boring).
Those are suggestions and criticisms. If you're ever planning on making another game of the same style, maybe read this comment again to know what to improve?
I'm giving 4/10 because the graphics and music were cool.