if u wanna do this really easily swap heavy and machinery for rockstar and rocketeer with mastery. the only reason rocket couldnt be used before without mastery is bc it couldnt hit purple shield but now with mastery its rlly easy to win
First you need pizza truck go together don't kill medic or uber let the truck make money, second upgrade general level 4 or 5 until wave 48 max it, final use general max level distract boss
Hard mod bosses from doomspire defense who looks like from the battle bricks 1. Paintmaster 2. Mad scientist alt form (i forgot name) 3. Turking? 4. Builders battlers 5. Doombringer