You should totally try to expand on your idea, i liked it a lot! When you kill enemies, your "friend" is much bigger size, i guess your prefab was normal size, while actual player was scaled down initially. Audio can be very strong sometimes, because of many of the same sfx playing at the same time. Graphics are very simple, you could take that into the direction of 2015 io games like agar io or slither io, which had very simple graphics too. Didn't really understand the challenge of the game, but liked it anyway. I hope you expand on it, would definitely play it, if you decide to continue!