the rooms are the following:
Enemy room: going into this square will throw them into a fight with mobs/enemy pets, the way these mobs/enemy pets are added is by either placing the egg of a mob into the fight slot or a pet (that pet can have a set custom level and even a custom saddle)
Path: this simply links 2 or more squares together over a long distance
Key room: going into this square grants the pets a colored key that can be used on a locked path to pass
Locked Path: is a normal path that needs to have a corresponding key used on it
Enemy and key room: an enemy room where after winning you receive a colored key to use on a locked path
also the locked path and key colors are chosen by painting the campaign while editing the key or path lock
Finish room: going into this room wins the game
Boss Room: entering this room throws the pets into a fight, where either all enemies have to be defeated to win the campaign or one enemy has to be defeated, the enemies that have to be defeated have a red aura like glow, these "bosses" can also be pets with custom saddles with custom levels to add more creativity
as a lil bonus here's how the pets will enter the arena, represented on the top left (if one pet is put in the block starts a 10 second timer, when time is up, the game starts, if all slots are filled then the game starts immediately and up to 4 pets (thus up to 4 players) can be in the campaign)