Didn't See It Comin'

From Halopedia, the Halo wiki

Didn't See It Comin'
Didn't See It Comin'.png
10 Gamerscore icon taken from Originally a single block colour (with the two circles both being white and the 'G' a transparent cutout), but modified by myself to display nicely on dark *and* light themes, and to be reminiscent of the pre-Xbox One gamerscore icon.

Didn't See It Comin' is a Halo 4 achievement added with the Majestic Map Pack. It is awarded when the player, in Majestic DLC matchmaking, assassinates an enemy who is zoomed in while using a scoped weapon or the HUD's built-in zoom function.[1]