Last time we began adding some enemies, including ones which spawn in areas you've already been through once you complete certain objectives, to keep the action lively

Owk I think this was a great idea because it's kind of boring playing a game and when you are killed, you would have to go over the same thing over and over again killing same enemies over and over . Reason I hate mission games but with this new leveling I think it would make the game worth playing and I hope other game developers learn from this .