Because of the puzzle or something else that annoys you? (swarms are build dependent, some builds have it easier than others, for example its possible to oneshot the hive with cryo orb, and AOE ignores most of the evasion against locusts, destroyed hives will make that the locust no longer respawn there)
Steam tells me that I've logged 843 hours into Underrail. All of them have been fantastic except the hours since 7/22/19. The swarms are fucking
awful. Sorry. Locusts, crabs, spiders, natives, fucking robot people. I don't know how you got it in your heads that "SWARMS, DUDE!" was the key to an expansion for Underrail but it fucking
sucks. Like really, really, really
fucking sucks. And much as I love the setting and story and all the new graphics I'm having a helluva time trying to find the part of this that's actually enjoyable. Not once in those 800+ hours of the rest of the game did I consider walking away from the game but now I'm stuck in a mindset of having to force myself
not to.