here is a novel idea, get rid of the timer all together. i do not understand the need to have the dungeon timed unless of course it pertains to something in the dungeon it's self that prevents the players from staying long. IE poison gas, bomb, or some other reason you cannot stay longer then the set time. i for one would love the opportunity to go into s dungeon, explore it all, destroy all the bosses then leave satisfied it was completed. i may be the only one who feels this way so feel free to ignore me.