AFK Arena Highborn Stronghold Guide: Wandering Balloon Route

To clear Highborn Stronghold in AFK Arena's Wandering Balloon, you must complete Campaign Stage 21-20 to unlock the adventure under the Peaks of Time tab, then clear the map sectors by activating the red, blue, and yellow rail levers in sequential order.

Highborn Stronghold relies on redirecting siege cannons across elevated tracks and movable carriages to destroy barricades without trapping key mechanisms.

Stronghold Mechanisms

Cannons fire in straight lines across the map until their projectiles strike a barrier or target. Before firing, confirm that movable carriages are positioned correctly and that the intended path is clear of critical puzzle elements.

Step-by-Step Route and Switch Order

Work through the fortress systematically from south to north. Toggling switches in upper zones prematurely can isolate movable carriages in dead ends.

1. Lower Sector and Red Lever

1. Clear the entry camps near the spawn point to gather initial offensive relics.
2. Advance along the southern loop to the first rail intersection.
3. Pull the red lever to lower the red track barrier, allowing the first movable carriage to roll onto the lower track loop.
4. Position your squad behind the southern cannon and fire north. The shot will destroy the first wooden barricade blocking access to the central courtyard.
5. Do not touch the blue lever during this stage; toggling it now locks the lower carriage in place.

2. Central Sector and Blue Lever

1. Move through the cleared opening into the central courtyard and defeat the defending camps.
2. Pull the blue lever to raise the blue track section, shifting the central railway layout.
3. Position the movable carriage on the blue line to intercept stray shells if needed.
4. Rotate your team to the eastern cannon and fire directly through the open lane to demolish the barrier guarding the northern ramparts.
5. Collect the unlocked resource chests across the courtyard before moving forward.

3. Upper Sector and Yellow Lever

1. Advance into the northern third of the fortress toward the interlocking yellow switches.
2. Pull the yellow lever to redirect the upper track, guiding the top carriage into place as a deflector.
3. Fire the northernmost cannon down the clear line to destroy the final barrier defending the boss camp.
4. Sweep the perimeter and collect any remaining standard chests across the outer edges before fighting the final camp.
5. Defeat the stronghold commander at the top of the map to claim the final crystal chest.

Relic and Combat Preparation

The enemies inside Highborn Stronghold scale to mid-campaign difficulty. When drafting relics from cleared camps:

• Offensive Priority: Seek out Icebringer and Firebringer to steadily reduce enemy stats in prolonged fights, or Sunstone and Moonstone to keep energy reserves full.
• Defensive Priority: Take defensive relics such as Shield of Agility or Deathly Terror to prevent your backline heroes from being burst down early.
• Energy Management: Turn auto-battle off near the end of a fight once victory is assured. Storing full energy bars allows your team to trigger ultimate abilities immediately at the start of the next camp.

How to Fix Soft-Locks

If a cannon fires while a carriage rests on the wrong switch, or if an essential barrel is destroyed behind an incorrectly raised track, the run can become impossible to complete.

If your path is blocked and no remaining cannons can target the obstacle:

1. Open the adventure menu.
2. Select Restart.
3. Re-enter the trial with reset camps and cleared switches.

Restarting resets your collected adventure relics and enemies on the map, but it does not affect your broader campaign progress. Follow the strict red-to-blue-to-yellow lever progression on your next run to avoid soft-locking.