Hey! This has got some real potential.
So one thing I would suggest is adding some sort of ability to "stick" to a wall, kind of like how you hold down the lctrl to not transfer surfaces. I think that would help alleviate some frustration with the platforming. That and some control tweaks.
I'd recommend checking out Aliens VS Predator 2 and the Aliens VS Predator reboot. They both have Alien campaigns which primarily focus on shifting from surface to surface by sticking to them. They let you climb on walls, ceilings, etc. Might help with the design of this game.
It'll be cool to see what you do with this.