I liked how there was strategy to it. Like, I did some runs where I ran past the enemies and either took no damage or very little damage, got the keys/guns/collectables, but then when I had to come back through to go to the last door, they'd all still be around, ganging up on me, then I couldn't avoid them. Also, I got into the elevator once and two of the green goblins followed me in and took a bunch of my life down because they were like bouncing off the walls and me.