Go to Riverhymn
Head to Riverhymn village, north of Plainsong.
Each opponent will have a ranged weapon.
Hide behind boulders and aim for enemies' heads.
After killing all the rebels, follow Kue to the village and talk to him.
Then follow the man again and talk to him when you reach the cave.
Go to the Top of the Drumroot
Turn left and climb the taller rock ledge.
Nearby, it’s possible for you to use the pullcaster to pull down a crate with some items.
Drop the ladder down, scan the area and jump to the opposite rock.
Go around the rock and stand on the rock ledge by the lantern.
Then use the shield-wing to reach the next rock.
Look up and reach the handle.
Walk up to the lantern attached to the wall and scan the area.
Jump up on the wall and follow the yellow lines to the upper level of the cave.
Stand on the edge of the board and fly to the top of the rock.
Then jump forward and pull yourself to the handle on the opposite rock.
Scan the area and climb the yellow lines.
When you come out of the cave, approach the small lake.
Collect 6 metal pods, which are being scattered by the Widemaw.
You’ll find another Widemaw on the other side of the lake, strolling.
Finally, kill any rebels that are about to attack the village.
After a while, several machines will appear.

Target their weak spots to quickly dispose of the enemies and save Riverhymn.
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