With the increased strength of the monster stampede waves Frost had long swapped out the weaker G and F-rank monsters for Es and even D-ranks. The left and right walls still stood strong though with several claw marks and divots, it continued to provide the necessary defence boost and height advantage required by his monsters. Which were now majorly dwarves.
Over the ten days several monsters reached their max level and evolved some even twice, greatly expanding the repertoire of monsters Frost could generate. He now had several hob goblin variants of his frost goblin caste, ice slimes that were E-rank, frost venom spitting spiders as well as their beefier frost tarantula cousins. But most of all was his frost dwarves.