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A newer version will be available in about an hour or two, includes Soundtest, Survivale Mode (Easy only), and 3 more levels. That's all I could make in about an hour.
I played the new demo, and it looks good. The new levels were fun and I enjoyed the fixed ending to the original demo (though there should be something that takes you back to the title screen by touching it for practicality). It's looking good and I noticed that you finished the character set; keep it up.