The gameplay focus on the platforming which is really nice, I like how only the last boss needs to use weapon to defeat. The upgrade are nice too, you can really feel the movement getting improve as the game goes on.
Tho default movement in the beginning feel a bit hard to turn around which makes the first boss a bit too difficulty in a bad way. And sometime when you restart, the boss wont shoot the missle that going to hit itself, makes it unkillable. Also, probably a optimization problem, in the second and third boss, the screen freezed for a while before respawning
One more thing, the grappling hook still staying in the death position after respawning, I guess you only teleport the player to the respawn point and not the grappling hook?
Anyways, cool game!