The monsters gradually approached the Wyvern. They wanted to help her, as the Wyvern was the strongest in these ice caves. Wyvern was quite savvy for a monster, so she began to descend. She knew that Wain would not get out of this situation.
Nor could Wain quickly penetrate the protective scales on the Wyvern's back. They were much denser than on the belly and several times more in a couple of layers. The plasma sword was useless in this situation.
Wain's fists were powerful, but not that. It would have taken him a few minutes, which he didn't have.
However, Wain had one solution, and that was bombs.
Wain inserted the yellow crystal into the hollow cube and immediately used the bomb bundle. He only had a few seconds before the cube filled with energy and was ready to explode.