The taking over opponents weapons is a cool mechanic.
The game is a bit hard with the melee guys moving at a similar speed to the player throughout their kit. Maybe would be nice so have them slow down a bit when starting to attack?
Additionally, the possession locks you into a QTE in which you are very vulnerable. I like the idea of it being a QTE but maybe pausing enemies during it makes it a bit easier.
It is a fun idea, can imagine coming across some legendary weapon, possessing it, and crushing fools :D
Well done.