I have an idea i think is pretty good. It would definately be hard but not impossible. Whenever i play diablo i always try to kill all the monsters on each level. So if you defeat all the monsters in the game, every monster, you would have to explore the whole game, it would make it more interesting and then when you finally beat diablo he drops a key or something happens to send you to anoher world. The secret could be multiple levels with the final level having a good item or part of a special set that cant be traded dropped or sold, then you could end up with a really good set. it could be a pretty good idea. or atleast i think so
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