I uploaded a post-jam version with:
- fewer but faster enemies
- sound effects
- scoring based on kills instead of time
- more hexagram explanations
Precise shooting is now rewarded more than spamming the screen with mines. Also, the player has control over their score: single shot kills are worth more than multiple shot kills, and there is a score multiplier for combination kills.
I haven't been rating games while I was working on this update. I realize it isn't in the spirit of the jam to be working on an update for so long, but I promised some friends I would have a game for us to hold a contest with, and the original version of this game wasn't quick enough. I'm about to start rating games now!