Meet Your Maker

Find someone you love and/or someone who loves you.

Because as of 4/30/23, if you are in co-op build mode and the host prestiges their outpost to ten, the joiner will unlock this achievement and the other achievement for prestiging an outpost once if they haven't already.

*Achievement Guide Ended, Now Funny Story*

I learned this because I invited a friend to join to watch me prestige the outpost to max level and complete the game. I wanted to gloat and instead we both unlocked this achievement, plus they got the one other for prestiging to level 1. Completely took my moment away, it was a hilarious and good surprise for them.