You cannot progress through levels in local COOP. We went through about 15 levels only to realize that none of the levels spawned the currency to unlock further levels. In local COOP, map animations are completely missing which results in invisible hazards acting like invisible respawn barriers making some of the long maps unbearably tedious. The game allows for Remote Play Together, but again it's limited by how many maps you've unlocked in Solo (the functioning part of the game), so if you want to progress through the game with friends, you'll have to grind through solo THEN play with friends, which is stupid.

You cannot progress through levels in local COOP. We went through about 15 levels only to realize that none of the levels spawned the currency to unlock further levels. In local COOP, map animations are completely missing which results in invisible hazards acting like invisible respawn barriers making some of the long maps unbearably tedious. The game allows for Remote Play Together, but again it's limited by how many maps you've unlocked in Solo (the functioning part of the game), so if you want to progress through the game with friends, you'll have to grind through solo THEN play with friends, which is stupid.