No. 2 saw in disbelief as he was the only Commando Mage left in the room, with the others retired to rest after they learned the truth. When he saw No.8 and this illusion of No.4 within the dimension instance, he felt that this was going to be something that he should not watch.
Even Jin who noticed that the dungeon instance had reached such a stage meant that No.8 had finally completed all the tasks regardless of the difficulty that was thrown at her. Although Jin did say that there were ten tries, those ten tries only happened if they got out of the dungeon instance. As long as Jin leaves them alive in the dungeon instance, it would be a continuous torture for of all them.