Junk Run is a mission I worked on for a Side Character in Warframe. Players were able to play as a member of an enemy faction for the first time. I was tasked with the entire Junk Run mission, in which the Grineer soldier Kahl searches for salvage needed to form more powerful weapons. The mission spans familiar tiles with new enemy placements, and cumulates in a boss fight in an all new level, which was where bulk of the level design work went.
The screenshots highlight the new level.