After completing the first house sequence, in the first map, you'll be rewarded with an Astronaut figurine. Upon dying this will resurect you in the spot you died unlocking the trophy.
The house is in a random room and you house key must spawn with it in order for you to get inside in the first place.
You may also get a random fabricator that allows you to turn in obolites for this figurine, often it's the room with a group of four fabricators attached to a room the has a Xeno translation stone inside.