Chassist is a perk. Perks are unlocked through contracts and Perk Amulets, and upgraded as described on the Perks page.
Levels
Level text as shown in the perk menu in game.
- I: Your placed blocks last 20% longer before decaying.
- II: Your placed blocks last 40% longer before decaying.
- III: Your placed blocks last 60% longer before decaying.
- IV (with a Perk Pusher): Your placed blocks last 80% longer before decaying.