The visuals of the game are just great, you are immediately drawn into the game, and the sounds serve it nicely. My only remark would be that the shooting, and particularily the aiming part of it, lacks in intuitiveness, as it's really tough to rotate well in order to shoot enemies quickly. Once that's fixed tho, the game has great potential, and leads to really comic situtations, as you are yelling to your partner to fuse in hurry to defend the fire :)
Overall, great submission, and fun cooperative game !