While playing with friends once we started building a base around day 10 ingame, small and large the moment it switched to night 20:00 a horde of larva 20+ would spawn and just tear it down and endlessly kill us. I do not know if this is a feature with progress or a bug but it became unplayable due to just not being able to kill them fast enough with the current blueprints we were able to make. 

Edited July 29, 20205 yr by Whiskey

I encountered this too. Not so many Larvas but still unbeatable for me. And I've built in a quiet place... I thought^^ I dunno if you can go to sleep in multiplayer? Because my guess was they come to you if you do not sleep for the night 🤔