There are 50 Calcified Fragments on The Dreadnaught. Each Calcified Fragment is obtained through a different method. Players will obtain Sleeper Stimulant?? by collecting all 50 of them.
1. Calcified Fragment I
2. Calcified Fragment II
3. Calcified Fragment III
4. Calcified Fragment IV
5. Calcified Fragment V
6. Calcified Fragment VI
7. Calcified Fragment VII
8. Calcified Fragment VIII
9. Calcified Fragment IX
10. Calcified Fragment X
11. Calcified Fragment XI
12. Calcified Fragment XII
13. Calcified Fragment XIII
14. Calcified Fragment XIV
15. Calcified Fragment XV
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the disappearing platforms that require you ghost. Head directly across while pulling your ghost out and enter the first room where you have to scan the worm on the ground. To your right there is a couple of pillars that are tilted, the calcified fragment will be at the top of these.
16. Calcified Fragment XVI
Third story mission where you first go to the Dreadnaught. Once you land, at the very start you are on a little walkway that sticks out from the Dreadnaught. Immediately drop down to your left under the little purple/red/maroon banners and onto the dirt pile and hop over it a little bit, the calcified fragment will be right there.
17. Calcified Fragment XVII
Third story mission where you first go to the Dreadnaught. Once you land, continue all the way to the end of the first area (skipping the door you're meant to enter) and head right down a little hallway. The calcified fragment will be on the left.
18. Calcified Fragment XVIII
19. Calcified Fragment XIX
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the disappearing platforms that require you ghost. Head directly across while pulling your ghost out and continue to the right passed the room you're meant to enter. There will be a platform further along, pull out your ghost and it will reveal the hidden platform. Head into this room, kill the Thralls and head to the hallway on the right. The calcified fragment will be at the end of this hallway.
20. Calcified Fragment XX
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the disappearing platforms that require you ghost. Head directly across while pulling your ghost out and continue to the left until you reach the edge. Pull out your ghost and it will reveal a path that's back to the side you just came from, but slightly up and to the right. Head into this room pulling out your ghost and on the left side of the room the calcified fragment will be near the pillar on the left.
