One guy would be the boss monster and the others have to try to take him down. there would be hella boss monster to pick from. To start there would be
mecha hitler
concept art:
he would have two flak guns for arms and also could deploy point defence flakvierling and flak 88. Each monster would have some "off maps" to help. mecha hitler can call down falls and use firestorm call in.
Much like tank can lose parts mecha hitler can have damage leg or lose function on arms.
UFO hitler
This hitler would be very very mobile and one of his ability would be to telport across the map on a cd of a minute or two.
He would also have abduction ability that all mens caught under his abducter beam would switch sides or get abducted and then respawned as suicider aliens
he would also have DOOOM ray which would instantly kill anything directly under him and last for like 30 seconds
Hella Tank hitler
This hitler would have HELLA DEFENCE and so much hp but would be slow and turn very slow. He would take up a ton of space and be scary. He could also call in v1 support every few minutes anywhere on the map.