[If he is having trouble, he isn't showing it. Akechi has done Mementos and Palaces for years on his own. No healing, no help, nothing but some patching up whenever he managed to get back, often on his own for that, too. If he buckled under this, he wouldn't forgive himself. He remains serene as he upholds the barrier and allows them to focus on getting through. Lux's light helped to distract it, the beast pawing at its eyes and shaking its head around, but it makes the aim of the angry blasts more erratic.

Akechi keeps his eyes on it to move the barrier if needed but still address them.]

As I said before, don't rush. We'll be in much worse shape if one of you breaks a bone in there from rushing. Use the grappling hooks if needed.