A really fun platformer! The idea of limited colors is very clever, and the difficulty reminded me of classic games like Super Meat Boy (complete with teeth-gritting moments caused by my clumsy fingers). The visuals, sound effects, and music all come together in a cohesive and polished style—I love it.
As for feedback, I’d suggest giving the spikes a more defined outline because (especially in the gray environments), they didn’t stand out much, and in the first few minutes, I couldn’t figure out what was killing me! But considering this was made in just a month, I’m even more impressed. Amazing work!