Fireboy & Watergirl
Friends · LEVEL 12 · Verified walkthrough
The High Diamond Vault
Send the jumping friend around the lower pools to open the right-hand passage. Bring both heroes through the lower shelves, then use their two plates to release the friend into the neutral diamond vault. Finish with a shared ride on the yellow lift.
Level objective
Collect all 7 ring-marked diamonds, then bring Fireboy to the orange exit in the upper right and Watergirl to the blue exit in the upper right. Both heroes must be at their own doors together.
| Campaign | And Friends · 12 of 36 |
|---|---|
| Collectibles | 3 fire diamonds, 3 water diamonds, 1 neutral diamonds. 7 marked diamonds required; 0 optional. |
| Hazards | 2 purple goo pools. Only your own element is safe; purple goo is dangerous to both. |
| Mechanisms | 5 plates, 1 lever, 6 moving platforms |
| Win condition | Collect all 7 ring-marked diamonds, then bring Fireboy to the orange exit in the upper right and Watergirl to the blue exit in the upper right. Both heroes must be at their own doors together. |
| Exits | Fireboy: upper right. Watergirl: upper right. |
Step-by-step walkthrough
Take the first blue diamond
Watergirl walks right along the starting floor for the blue diamond. Both heroes wait on this floor while the jumping friend opens a route below.
Send the friend around the lower left pool
The friend walks off the right end of its starting floor onto the pink platform, then crosses left and drops beside the lower shelf. Approach the left bank of the purple pool and jump right across it. Continue beneath the central wall to the far-right bank.
Climb to the green lever
Jump left from the far-right bank onto the bottom right shelf. Cross its purple pool with a jump to the left bank. Jump onto the short shelf against the central wall, then onto the next shelf above. Walk right through the green lever to open the gap in the heroes’ starting floor.
Bring the heroes down
Each hero walks through the open gap at the far right and descends onto the middle right floor. Crossing the green lever toggles it again, so reopen it whenever a partner still needs the gap.
Collect the two lower right diamonds
Watergirl drops from the left end of the middle floor, then steps right off the short shelf for blue. Cross the purple pool, drop around the far-right end and walk left underneath it. Fireboy follows this route, collecting the red diamond underneath the pool. Both heroes wait below the central wall.
Lower the white lift
The friend returns by the same lower route, jumps left across the bottom purple pool, and climbs onto the left middle shelf from its outer edge. Hold the white plate to lower its lift.
Raise both heroes from the bottom
Fireboy and Watergirl jump left onto the lowered white lift. Watergirl collects its blue diamond. The friend jumps across to the pink plate, releasing white. Wait for both heroes to rise fully, then have Fireboy jump for the red diamond above the lift.
Open both vault gates
The friend keeps pink held. Each hero climbs onto the raised pink platform, jumps left onto the upper floor, and holds a coloured plate. Fireboy can hold orange while Watergirl holds blue; both gates must stay open.
Collect the neutral diamond
The jumping friend climbs through the pink platform to the upper floor, approaches the right edge of the high vault ledge, then jumps up before steering left. Walk through both open gates and collect the neutral diamond. The friend can reach this high vault with its stronger jump.
Return the heroes to the right
The friend comes back down and holds white again. Each hero descends from the upper floor, boards the lowered white lift and steps off its right edge onto the bottom floor. Go around the right end of the bottom shelf, cross its purple pool and climb the two short left-hand steps. Leave space beside each step before jumping upward and steering onto it.
Collect the high red diamond
Climb the far-right slope and jump left through the green gap to the starting floor. Watergirl holds yellow to lower the top lift. Fireboy approaches from beside the lift, jumps aboard and rides up when Watergirl steps away. Walk left off the raised lift to collect the red diamond, returning to the starting floor below.
Make the final shared lift journey
The friend returns around the lower route, climbs through the right-hand gap and holds yellow. Both heroes jump onto the lowered yellow lift. Move the friend off the plate and let the lift rise fully.
Enter the matching doors
Walk onto the top-right ledge and continue down its short slope to the exits. Fireboy enters red and Watergirl enters blue. Either hero may arrive first.
This route was verified in the game simulation using player controls, required diamonds, and both matching exits. It describes this version’s independently reconstructed room, not an official walkthrough.
How this room’s mechanisms work
Switch 1
middle left
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 2.
Switch 2
middle left
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 1.
Switch 3
middle center
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 3.
Switch 4
middle right
Walk past the handle, or use it nearby: Enter for Fireboy, E for Watergirl, or the touch Use button. Each use toggles it; it stays set after you leave.
Controls Moving platform 4.
Switch 5
lower center
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 6.
Switch 6
lower left
Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.
Controls Moving platform 5.
Moving platform 1
upper left
At least one of these inputs must be active: Switch 2.
When powered, it moves up; when power is released, it returns.
Moving platform 2
upper left
At least one of these inputs must be active: Switch 1.
When powered, it moves up; when power is released, it returns.
Moving platform 3
upper center
At least one of these inputs must be active: Switch 3.
When powered, it moves down; when power is released, it returns.
Moving platform 4
middle right
At least one of these inputs must be active: Switch 4.
When powered, it moves left; when power is released, it returns.
Moving platform 5
lower left
At least one of these inputs must be active: Switch 6.
When powered, it moves down; when power is released, it returns.
Moving platform 6
lower center
At least one of these inputs must be active: Switch 5.
When powered, it moves up; when power is released, it returns.
If you get stuck
Check the unfinished objective
Count the ring-marked diamonds still visible. All 7 are required before both matching doors can finish this room; each hero collects their own color.
A gate or platform moved back
A pressure plate releases when its rider or weight leaves. Keep your partner on it until you are safely across. Levers stay set after you leave; check their ON or OFF state before crossing.
You missed a moving platform
Return to safe ground and use the connected switch to bring it back. Board before your partner releases the plate or changes the lever. Avoid jumping into its underside; line up with the open shaft first.
You cannot recover safely
Pause and choose Restart level to reset both heroes, diamonds, weights, and switches. Previously completed levels stay saved. Follow the step order before moving a box or releasing a weight.
For touch controls, jumping, audio, or online connection problems, see player troubleshooting.
Level questions
How do you finish The High Diamond Vault?
Send the jumping friend around the lower pools to open the right-hand passage. Bring both heroes through the lower shelves, then use their two plates to release the friend into the neutral diamond vault. Finish with a shared ride on the yellow lift. Collect all 7 ring-marked diamonds, then bring Fireboy to the orange exit in the upper right and Watergirl to the blue exit in the upper right. Both heroes must be at their own doors together.
How many diamonds are required in The High Diamond Vault?
7 diamonds: 3 for Fireboy, 3 for Watergirl, and 1 for either hero. 7 ring-marked diamonds are required to finish.
Which hazards are in The High Diamond Vault?
2 purple goo pools (lower right and lower left). Purple goo defeats either hero. If either hero falls into a dangerous pool, both players restart the level.
What do the switches do in The High Diamond Vault?
Switch 1 (middle left): Controls Moving platform 2. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 2 (middle left): Controls Moving platform 1. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 3 (middle center): Controls Moving platform 3. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 4 (middle right): Controls Moving platform 4. Walk past the handle, or use it nearby: Enter for Fireboy, E for Watergirl, or the touch Use button. Each use toggles it; it stays set after you leave. Switch 5 (lower center): Controls Moving platform 6. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it. Switch 6 (lower left): Controls Moving platform 5. Keep a hero or movable weight on this plate to keep its signal active. Stepping off releases it.