nice first game! controls pretty well, doesn't look horrible, and the movement sound doesn't grate. i did find a glitch though where you could warp through walls if you spammed a direction though. I only noticed it when spamming right and it's not consistent. something of note though. over all great job for a first and hope you keep making more and more games!
Okay i think i found the bug if you spam two directions at a time to go diagonally you can glitch though walls. you also can just hit the blue block from the side and not head on to beat the level.