Have Null Warp and Flight/Mine Sweeper Monters There are both warps and mines in the dungeon. Mines deal around 15000 damage per monster so you will want Mine Sweeper monsters. Also you need Null Warp monsters to freely move since you don't go out in the same direction when you enter warps. Defeat the Preta Within 5 Turns The two Pretas each have a near OHKO Volatile Blast attack after 5 Turns. They are near walls so you can get a pinch to quickly remove them. Therefore you will want to have at least 2 Bounce monsters.