I almost quit playing when i failed two times in a row the rocket launcher section. Im gald i didnt, the next run i won the game :D
Art is very nice, you have to get used to the controls but in a few runs you understand them. Audio is great too. Overall its a short and fun game, congrats!
If you want to polish the game my suggestions are: a progression bar in somewhere the HUD or when you die like (4 of 7 rooms cleared), cause the player doesnt know if its a shortt game or a long game, and spending 5-10 minutes and seeing you are near the end makes you want to continue. And instead of putting the controls and mechanics in the description of the itchio page where half theplayers dont see it, it would be nice to show it in the sky or background of the levels or rooms gradually when you need it, so the player understands what to do with the shield enemies for example.
Also, you can try my game if you want, it just takes 5 minutes ;)