Lift Battle is a Story Quest in Xenoblade Chronicles. It is received at the Main Maintenance Bay in Galahad Fortress. The Mechon is the Sentinel Mechon in the 2nd Fuel Supply Room, it will drop the Fortress Pass Key needed for complete this quest.
- Defeat Mechon within Galahad Fortress to see if you can find a way to unlock the lift.
- Investigate the lift's verification device to unlock the lift.
You unlocked the lift and it can be used now. Descend to the lower levels of the fortress.