Nice little gameplay idea to go with the theme.
Couple of suggestions if you don’t mind:
- Music was panned 100% to the left (at least for me) which made it really hard to concentrate.
- I don’t think the game ever got faster / more difficult. I saved 100 souls and the game kept going at the same pace. It should become more challenging over time!
- “Killing” a good soul should also count as a failure.
Good job though!