Rearm the traps; these are located under small snow mounds which must be cleared away first. Only unarmed (closed) traps will be usable to update these steps. Clicking a re-armed trap a second time will result in death.
Rearm the 2 traps at eastern front. ( 0, -341, -480 ) Copy/waypoint 0, -341, -480
Rearm the 2 traps at western front. ( 264, -369, -608 ) Copy/waypoint 264, -369, -608