Guild Wars 2

Thief/Daredevil: Lockpicking
Unlocks locked chests that appear in random locations and disarms traps

Elementalist/Tempest: Control Elements
Control elements to unlock new paths (i.e. making bridges of ice over water, dousing flames blocking paths, controlling wind currents to move objects)

Mesmer/Chronomancer: Stop Time
Stop time to create unique opportunities such as freezing a boss in a vulnerable position or stopping a spinning fan so that players can move between the gaps.

Ranger/Druid: Tracking
Track footprints and trails that lead to areas where unique monsters and bosses spawn.

Guardian/Dragon Hunter: Cleanse Corruption
Fear dragonspawn at the target location or clear remnants of dragon corruption to open new paths (shatter kralkatorrik’s crystals blocking a path, force vines to withdraw).

Revenant: Mistwalker
Enter the mist to access alternate realities of the location you are in where you can find unique objects, environment weapons, or objects that can be brought back into the normal plane or used within the mists to impact the area.

Necromancer/Reaper: Deathspeaker
Speak to fallen spirits that linger in the area to gain information about an area or to assist the group. Helping spirits from the beyond can lead to unique treasures

Engineer/Scrapper: Repair
Repair broken siege, golems, or other techno-gadgets in the zone to your group’s benefit.