Place auras and buff beam round 1, use a diced app builder round 2 to place all towers. all i do is upgrade buff beams to max and boost all waves. you will want to heal west auras towards the end. 4-6 player from start to finish.
Characters you want to level can sit at 2 they probably will still die tho.
Faster build with higher stats: https://dundefplanner.com/map.php?load=2802&viewermode