Kinda reminds me of the dretch storm of Tremulous.
Tremulous is an alien vs human game, but unlike most AvH games out there, aliens are largely restricted to melee attacks. The foot soldier class for the aliens, a dretch, is like a small spider that dies really easily, but can do serious damage so there's quite a lot of a leanring curve to the game. I've seen newbies grow up getting hunted like the MC getting hunted by the rabbits in this story to completely mowing them down.