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
Third story mission where you first go to the Dreadnaught. Progress through the mission until you get to the "Hull Breach" area. Once you enter the big open Hull Breach area, towards the right where the large ship/structure that the Cabal come out of is located. Before that ship there is a little mound with a broken in half pillar with red/grey stone where it's broken. The calcified fragment is on this mound.
10. Calcified Fragment X
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the "Hall of Souls" area (where the second invisible platforms spawn). Cross the platform and to the left side. Go through the room on the left to the other side where you will have a slight open area. On the opposite side of where you're standing there will be a little room. Enter this room, go to the right and crouch through, Crouch straight through the first room to the second, and then make an immediate right as you enter the next room. In this area the calcified fragment will be located.
11. Calcified Fragment XI
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the "Hall of Souls" area (where the second invisible platforms spawn). Cross the platform and head the the first room on the right side. Continue through the first room to the right and straight through the room where you take out the ship's weapon (not to the left where the mini-boss spawns from the portal). When you're through this room there'll be a somewhat open area, and to the right up high there will be a platform. Pull out your ghost and jump on the invisible platforms to get up there, and calcified fragment will be up there.
12. Calcified Fragment XII
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the "Hall of Souls" area (where the second invisible platforms spawn). Cross the platform and head the the first room on the right side. In the first room there will be some pillars against the wall, the calcified fragment is on this wall slightly to the left behind those pillars.
13. Calcified Fragment XIII
14. Calcified Fragment XIV
Third story mission where you first go to the Dreadnaught. Progress through the mission up until the point where you need to scan the worm on the ground. From here, head into the room where you need to crouch on your right, and then head immediately to your right where you need to crouch again. Head left and all the way to the end of this corridor to the fallen over pillars, and the calcified fragment will be underneath these.
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.
