All three "UNKOWN" kills involved an Atlas (S?) as either the attacker or the person killed.
In one case, the team member I was spectating died without losing his CT armour, and he assured me that he did not have an XL engine (his ST was destroyed several seconds before he died anyway). Possible ammo explosion maybe?
Never saw this bug before the release of CW

https://dl.dropboxus...wn%20killer.png
https://dl.dropboxus...%20kill%203.png
Edited by Troutmonkey, 16 December 2014 - 03:01 AM.