That's a really unique concept to put on top of a SHmUP.
Though I didn't clear the game so far. I spent 30 minutes, died to the last boss, and didn't feel like I quite learned the game... It must be a "hard to learn, hard to master" deal.
As for the challenge proper, I would say: it's hard. In that you gotta do some "body management" all the time and in real time, which is a thing I'm terrible at. I don't know if the management aspect is easier to others.
As for the gameplay, would have probably greatly benefited from:
- enemy health indicator
- audio and visual cues to signal that the currently possessed body is running low
- different control scheme / key rebinding. I am not a fan of ZXCV at all (never understood the C and V, gotta lift my hand off Z and X) so that didn't help in my experience.
Personally also had trouble manipulating and juggling the bodies too. Emphasis on "Personally". Sometimes I want to pull a body but I pull another one. This made me wonder what if the game used WASD + Mouse instead, which would give a freer aiming.
I'll come back to clear the game later, despite the hard time I've been having, I feel invested in the novel concept.