Very cool little game, I liked it a lot! I couldn't really properly beat it since it ended up crashing when I beat the grim reaper boss, but I thought it was really fun and well done.
Aside from a few little balancing or bug fixes here and there (rolling through doors broke some room transitions and I thought the orb enemies were a bit brutal because of their speed), I thought it was super cool and I'd totally play more if you're planning on continuing this! (^^)