Perhaps instead of permanently losing the weapons after victory they could instead "decay" and lose half of their levels upon the next dungeon or three quarters of their levels if you lose (thus rewarding players who consistently win with better starting gear) Or another Idea I had is your equipment would randomly generate on the level you found it if you walk over it you pick it back up but the area with it will have more enemies.
 "Swarm Simulator: Evolution"){kind=icon}
 "Dungeoneers"){kind=icon}
 "Necronator"){kind=icon}