Master Achievement Not Lit Up for LWS3.1
There are two hidden ones in the final instance.
First is to not let the first boss go in a full circle.
Second is to kill one of the white mantle on the wall when they cheer during the fight. You’ll need a ranged attack. One hit worked for me.
There’s actually a third hidden achievement as well, to use the unlockable Glider skill 5 into one of the currents used for Ley Line Gliding.
Oh forgot about that one. I figured most people that have the skill would get it accidentally.