Use the letters to track your pieces

Items can appear as ??? in the game. The letters and item IDs below identify the community reference entries. They do not describe a mandatory or shortest collection order.

Piece Item ID Location and branch
A 662 Rebreather cave: take the main fork’s right Stun Gun branch, find the wooden cross on the left, break the boards and descend the rope to the target.
C 668 Rope Gun cave: follow the first large chamber’s right edge to the rope beside the waterfall; descend into the pool and find the underwater opening on the right. Rebreather required.
E 689 Northeastern coastal Grind Trap / Artifact Cave: enter the boarded stairs in the northernmost cabin and follow the ropes towards the golden skeletons.
B 667 Pickaxe cave: after the first underwater route, use the boarded left branch and follow crosses and ropes down. Do not continue on the main waterslide route for the Pickaxe.
G 712 Ancient Armor cave spaceship cockpit: collect the core from the armor wearer’s hand. Check the piece and outfit separately.
D 669 Deeper in the Ancient Armor network beyond the spaceship; follow the onward rope-and-dive route to the watery room with a central metal column.
F 708 After the final battle, choose to stay. Follow the blue beam in the mountains to the deep cave’s end.

Prepare for G and D

Use the Ancient Armor route for the entrance and journey to the spaceship. These sections involve repeated dives and demon encounters, so bring air, medicine, armor and weapons. A guide author’s quiet visit to another branch is not a permanent no-enemies rule.

For D, leave the spaceship towards the zigzag climb on the right and follow the lightning-source route. Continue through rope descents, a dive, demon areas, a climb and waterslide, then more water and boards. In the watery chamber, go around the central metal column’s right-side rock ramp to the platform at its top.

Unlock F by staying

F is not available before the ending choice. After the final beach battle, choose stay instead of leaving by helicopter. The blue beam leads to the mountain cave holding the last piece.

Make a separate save before the ending choice if you want to preserve your options. Once you collect F, verify the full set of seven pieces and combine them in the inventory.