The Ancient Fort Puzzle in ARC Raiders tests your exploration and puzzle-solving skills rather than pure firefights. Within the Blue Gate map lies a ruined fortification where you’ll find three hidden fuel cells in separate buildings. Insert them into three fuse-boxes located on the fort’s outer walls and towers. When all are activated, a secure loot chamber opens for you to claim rewards.
Ancient Fort Cellar Puzzle: Objective
- Investigate the Ancient Fort ruins located in the Blue Gate region.
- Locate and retrieve three fuel cells hidden around the fort area.
- Insert each cell into its corresponding fuse-box on the outer wall, second floor, and watchtower.
- Once all fuse-boxes are powered, unlock the basement doors of the fort.
- Enter the basement to collect rare loot and crafting materials from the locked chamber.
Ancient Fort Cellar Puzzle: Location
- Map: Blue Gate region

Fuel Cell spawn points:
- West of the fort near a small signal tower.
- Northeast of the fortress, on a toppled shelf in a ruined building.
- Inside the fortress, in a room with a hole in the ceiling, under a yellow cloth.
The three electrical boxes location:
- Along the southernmost wall of the fort, near the locked cellar door.
- On the second floor of the tower, inside the fort.
- On the second floor on the northern side of the fort.
Ancient Fort Cellar Puzzle: Step-by-Step Walkthrough

Deploy into the Blue Gate map and navigate to the Ancient Fort ruins.
Screen Recording by: NerdsChalk
Each fuel cell spawns on a wooden pallet that remains as a visual marker regardless of the spawn. Pick it up carefully and carry the fuel cell to one of the three glowing blue electrical boxes.
Screen Recording by: NerdsChalk
Carry it to the fuse box on the outer southern wall of the fort and insert it. Repeat for all three fuel cells, powering all electrical boxes.
Screen Recording by: NerdsChalk
Once all are powered, the hidden cellar door at the back on the north side locks will open. Descend into the cellar to access a hidden bunker with high-tier loot including weapon cases and blueprints.
Ancient Fort Cellar Puzzle: Tips
- Watch out for ARC enemies like Wasps and Hornets nearby.
- The fort can be a risky area due to enemy spawns and players; plan your approach accordingly.
- Follow the cables going from the cellar door to track electrical boxes or fuel cell locations.
- The loot inside is valuable but consider the time and exposure risk when attempting this puzzle.
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