This is when Amano and Gasai swoop in, armed with submachine guns, to rescue Ninth and move on to the next phase of the plan.
Eleventh seals himself in a bank vault.
When they can't open the door, Ninth turns on Amano, aiming to get revenge for her eye, and for Nishijima.
Amano is a little bit of a wimp. But that's fine; his nervousness in the face of having to kill is perfectly normal and serves as a great comparison toward Gasai's willingness to go in axe-first.
Death Games are fucked up. It's worth acknowledging that.