Teamwork makes the dream work!
The art style is extreeeemely reminiscent of Nuclear Throne, a game I'm quite fond of. The only thing about Nuclear Throne however is that it's full of enormous particles and crunchy, visceral screenshake, which I felt was sorely missed here.
I really enjoyed the core mechanic of shining a light to help your buddy shoot. Managing the battery level and carrying the power core was a pretty fun gameplay loop.
I felt that the enemies move slightly too fast however, not giving me much time to react to seeing them (I didn't play it fullscreen, maybe that's why?)
Also, no music! That was something I also felt was sorely missed.
A really fun little game though, good job!