Find gear in Mountain Temple was a mission in Jak II. Jak was looking for answers regarding the Tomb of Mar, for which in turn Onin send Jak to collect three artifacts from the Mountain Temple, one of them was the Gear. The PlayStation 3 and Vita versions of this mission are related to a trophy named "Just the Artifacts Ma'am", completing this one and the other two related artifact missions at the Mountain Temple will reward you with a bronze trophy.