This video is from my twitch clip. So max resolution option is 1080p. Sorry for bad quality video.
Using a Bomb, Kill a distant Ratling Gunner as Outcast Engineer.
Explanation of this video.
I was host and played as Mercenary. My friend played as Outcast Engineer.
The weird bug happened at 0:24. OE threw bomb to rattling gunner, and unchained bot kill it. And I completed Bombardment challenge and my friend (OE) couldn’t complete this challenge.
I still don’t know exact reason.