This game is really fun! reminding me of the old shooter game like Contra or Metal Slug. Simple and straightforward, i can't pass through the final chapter but i believe it is great! Some of the flying boxes are too fast perhaps you can slow it down, i always get damaged by them XD oh! i also found that i can hop on the enemy's head without taking damage, which i use to pas through the enemy without fighting them, perhaps you can add damage of enemy touch the enemy? Overall it is a great game, great art and retro style music is a chef's kiss. Great job!