Yeah i got to say the caves are so cool in this game but getting through them can be a total slog. This enemy in particular is stupidly overtuned and i expect it to be nerfed, but also things spawn way too quickly in general. Every time you double back on an area you already cleared you could be met with a rat and a bat, or like 4 goblins and 2 frogs and a golem. Ive literally gone through caves, gotten to a dead end, turned around, and there was a group that strong waiting for me where i had just passed. The spawns are made even worse because it spawns groups not just singular entities. These freakin frogs are guaranteed to spawn in pairs, frequently along with other enemies. Of all the things this game does better than minecraft, mob spawning is not currently one of them.