NGL, both events this chapter just feel so forced, on many levels. I get it, you lost perspective and wrote your OC a little too OP. Now you're trying to keep things interesting by restricting his goto abilities. Just try not to make it so blatant. It makes your audience see the forest for the tree and lose all sense of tension.
The same is kinda true for the attempted rape scene. The supposedly high rank adventurer is a douche canoe and stalks the assumed weakest member of a rivals team. Proceeds to ambush her so he can steal the "OP" weapons her master lined her. Then when that fails to go as expected, resorts to physical and sexual abuse. In the middle of an active battlefield, in the open where anyone could see...
Y'know I usually rail on authors who lower their MC's intelligence to force a plotline thrue, but honestly the author did this bady dirty and stunted his intelligence to force such an utterly stupid scene thrue. Was he a morally upstanding person? Nope! But you would expect someone that is so evil that they would rape and kill a child to do so in a place that wouldn't be visible from practically any direction, and not some place that even a wandering monster could interrupt.