This one is giving off big flash game energy. Quite fun to obliterate a room in 2 seconds with the SMG, which is absolutely bonkers. For the boss, you can just stay on an edge during the ground attack thingy phase and avoid getting hit. But the other attack does a lot of damage and the boss has way too much health to the point where regardless of how broken it feels, I can't pass the boss :p.
Besides that though, quite fun!