hey man I liked the concept unfortunetly I couldn't play for very long due to two main reason 1 the colliders for the spikes are way bigger than the actual representation on screen 2 there seems to be a bug that when you die a couple of time the game select quit instead of playing again.

Interesting concept, similar to mine (https://greenworks.itch.io/link), appreciate the fact that you made it multiplayer! ^^

That first gap jump is waaaaay too hard though. Ideally, you have to let players gradually get used to the mechanics of your game, before introducing jumps or any other mechanics which require near perfect mastery of the player's learned skills. 

Keep that in mind, because I didn't at my first couple of games, and I also see this in many games here on itch.io. First couple of levels should be learning and mastering a certain game mechanic, then you present the players with harder challenges. Cheers!