Glad you enjoyed the game! I placed the spikes in B-1 to force the player to use the pause mechanic, but I think I could've given a wider time window for pausing the blocks in the correct position (There is also an alternative solution using pause and double jump, but it's not really the intended way). I agree with your point about the physics -- I changed the player sprite dimensions from 1x2 to 1x1 on day 3 to use less animation sprites, and had to change the collision boxes as a result, so the player physics feels a bit off now. I hope that I can find a way to fix them for the postjam release :D