Nice work! Engaging, clever puzzles & great nostalgic feel! I am having a hard time with the hitboxes/collision detection - is it closer to his feet or his head? Getting stuck on walls too much to beat the laser level, and hit by guards when I swear we're on adjacent tiles. Love the SFX, satisfying to pick up a key and so forth. The space hip hop music doesn't quite hit the same nostalgic feels -- ideally I think the goal is to capture the marooned / trapped anxiety, maybe something that starts relatively low-key and ratchets up as the level goes. I am hearing something along the lines of Metroid NES's Title screen & Chozos themes. Anyway, 'nuff said! Great job!