I was lost in the game, I didn't know what to do except killing enemies in front of me, but the positive side, it controls well, and I liked the design of the green enemy + the main character. Moreover, I think that it misses a background music during gameplay. So to sum-up,  I think that if you add a direct information about the main goal, it will lead better the player to the right objectives. Anyway, gg to you !