As Kim said, progressive difficulty would be perfect but the rest of the game is pretty neat. Like the visuals and music. Gameplay is really nice.
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Thanks for the feedback and I'm glad you enjoyed it despite some of the issues present. Addressing the difficulty and fixing the spawn timers (enemies are supposed to wake up in a more random and staggered manner) for the web browser version will be my first changes post-jam!
Wish I could take full personal credit for the music & visuals, but I'm glad you liked my choice/usage of the assets. :)