Natural Selection 2 achievements

Kill a developer

Kill an Alien while defending an Extractor 10 times in a single round

Kill a Marine while defending a Harvester 5 times in a single round

Spent some time playing arcade game modes

Rattling the Cage reaps its own reward

Destroy 5 Extractors in a single round

Parasite 20 Marines in a single round

Kill an Alien while defending an Extractor 5 times in a single round

Kill 5 Harvesters in a single round

Taunt after killing a player

Build a Hive as Gorge

Kill a Marine with 2 bites and a parasite