Quest name should be:
Evil Presence MazeThe quest should be triggered after you hit 3/4th trap door
The quest is a small / medium maze where you can get only EPs ( 1 - 9 ).
The quest is completed after you complete the board and clear it of evil presences.
Reward should be : +5% enhanced effect untill you reroll your character / end your climb.
The fact that there will be only EPs will make this quest a very fun one and also it will bring more chance to get whites or decent items.
The fact that you need to get to 3/4 trap doors will make the game mobile while trying to hunt it down.
You won't get bored after this for sure

= Hope you enjoy the idea ==
and make it so you cant leave the maze until you have finished with dying. leaving game would result in instant dead. Sure would prolong our hardcore season
haha.