Hey !
Really nice game, loved to be able to use the jetpack to move through the level.
The gameplay is really nervous during fight and I was surprise that the music wasn't. Was expecting some kind of DOOM's like music.
The jetpack need maybe a little more air control, but this difficulty to use it is part of the experience.
Maybe need more reference to the Lore In Game.
Be careful with the yellow room, some people are prone to seizure, and it could trigger them. (The idea was cool nonetheless.
The weapon was also kind of frustrating, but seeing the coments below, I would have love to see the other weapon you had in mind.
Please continue to create game !