I wouldn't think you'd get bored until you've unlocked the higher-level characters. Playing as level 2 or 3 in a given class, or playing as the second or third monster type, keeps things relatively fresh, and there's a good number of maps and secondary map setups. As for frustrating ... well, that depends on who you play with. There are certainly enough tools to coordinate well with random people.
― polyphonic, Wednesday, 18 February 2015 22:47 (nine years ago) link