Reduce Ability Locks The boss will cause Ability Locks; there's not much you can do about it other than deal with them. However, the Robot enemies will also cause Ability Locks as well - try to kill them quickly to reduce the amount of Ability Locks going around. Viable units All units should be Null Damage Wall. However, with a little luck and some careful shots, it is possible to carry non-Null Damage Wall units through this dungeon - but taking a full team of Null Damage Wall is strongly advised until you know the dungeon very well.