Its got to be some kind of achievement. Oh let me tell you why. I used a Rutilans Nexilies with Acid Spray, Acid Strike, Molt, Restoration, Rupture, and Acid Rain. I got 7 kills while only using Acid Spray in one life. Stat wise it is the Rangers most powerful ranged attack, strength 7. But calling it a ranged attack is misleading because it works like a shotgun, unlike the other abilities which are like explosive sniper rifles, and in one case a long range grenade launcher. It feels like a Brute Mauler, which has a firing range that is only good at melee range. I can get 7 kills much easier with the other ranged attacked, especially the one that is mutangenic acid.
Has anyone else done this well with Acid Spray? I am grateful to have recorded myself using it. JFYI I wasn't the host, as we all know the home team always has the connection advantage.
I just love this game to pieces, it is tied for first place out of all the fps games I have played.