I like the idea of everything is controlled by coins like health and bullets, I think it would be cool if your final score was based on coins as well.
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Thank you! I did implement the feature where coins are shown at the end of the game at one point, but I later had to revert to a backup and didn't add it back in. I felt the game leans more towards survival than arcade, and I didn't want to encourage players to avoid shooting entirely just to collect the maximum number of coins. Perhaps I could have added a point score for killing enemies.