If you kill any of the creatures in the zone it will activate a 30 minute quest success/fail timer. The quest can still be completed within this time limit.
Movable boards appear in various locations throughout the zone that will allow you to cross wide chasms. If a location seems unreachable, look for one of these glowing, blue boards. Use the mouse the wheel to spin the board.
Using Spring-Loaded Gnomish Stilts will also let you jump far enough, however it may cause some odd pet or merc pathing issues.
Harvest and skin the dead yeti laying in the snow immediately to your right as you enter the zone.
Put on the yeti suit by examining it from your inventory and follow the path to the right to enter the courtyard through a hole in the wall.
Device location
Plank placed
Place listening devices at the following locations. The spot to place a listening device is marked with blue sparkles. Placing a listening device will not drop the disguise, however it will drop stealth or invisibility. Additionally, collecting purple shinies will drop the disguise:
North side of chasm at courtyard entry hole: ( -106, 1, -188 ) Copy/waypoint -106, 1, -188
Between towers by barricade: ( -21, 1, -119 ) Copy/waypoint -21, 1, -119
Between towers against south wall: ( -10, 1, -78 ) Copy/waypoint -10, 1, -78
Inside west tower at bottom: ( 90, 0, -80 ) Copy/waypoint 90, 0, -80
Inside west tower at top: ( 82, 15, -71 ) Copy/waypoint 82, 15, -71
Inside east tower at bottom: ( -76, 1, -109 ) Copy/waypoint -76, 1, -109
To reach this location and the following ones, pick up the plank at ( 99, 0, -88 ) Copy/waypoint 99, 0, -88 and use it to cross chasm to the east tower.
End of upper walk exiting west from tower: ( 17, 19, -60 ) Copy/waypoint 17, 19, -60
Roof of east tower in alcove: ( -81, 27, -104 ) Copy/waypoint -81, 27, -104
End of west walk along castle wall: ( -21, 20, -216 ) Copy/waypoint -21, 20, -216
End of east walk along castle wall: ( -166, 20, -197 ) Copy/waypoint -166, 20, -197
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