Optional superboss fight from Worldless.
- No damage: Mostly self-explanatory, but it's worth noting that in order to do this you're essentially locked out of using some of Aven's skills, namely Defend, Deflect, Assimilation, and the defensive property of Seal, since all of those require you to take some damage. His only viable defensive skill here is Evade.
- No GoT: No usage of Glance of Tomorrow, an ability you unlock by defeating the boss. It deals massive absorption damage and makes rematches of this fight a lot easier. This was recorded in the Path of Reminiscence area, where you can rematch against any enemy in the game, so I technically have the ability unlocked. But since the idea was to perform this challenge under the conditions of the original battle and you wouldn't have GoT yet at that point, I'm not using it.