This achievement is story-related and can't be missed.
After defeating Bryn outside Karba Prison, Ichabo will flee and leave a portal open right in front of you, while Bryn lies on the floor.
Going through this portal you will face some enemies and some kind of M. C. Escher puzzle, after which you will arrive at the Stasis Chamber. This is a small place, with a pool on the center, a big statue on the back and a small Onurasi statue on the left. Don't interact with the pool right away. Instead, use the statue on your left to save and to teleport to/from Plumpet Island, making sure to replenish health, potions and ammo.
Upon returning to the Stasis Chamber via teleport, interact with the pool on the center and the achievement should unlock.