Her Concepts

The Skeleton, as seen in the early access trailer.

Her Concepts is a Challenge in Risk of Rain 2. Its goal is to "Find the Altar of N'kuhana".

The altar is always accessible in Wetland Aspect, one of the second stages, underneath the stone ramp that hangs over the edge of the map. Underneath, a hole leading into the cliff covered by some tree roots can be seen. Players simply need to make their way down the cliff and use their utility ability if they have one. At the end of the cave is a chamber with a skeleton floating in the middle. Simply shooting the skeleton completes the challenge.