Hey there.
Ok, this one for me falls a bit flat. It feels random, like why are there kobolds, giant ants, and undead all here? Is it a crypt, because there is just one room that is called burial room, the rest don't completely make sense, why is there a common room in a crypt? What about picking a theme, like undead crypt, and running with that. Maybe make the ants into spiders, more atmospheric, and the kobolds into cultists with a necromancer leader as a boss battle.....
Just random thoughts