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Paranoia

You can sense when an enemy is looking at you.

Awareness

Increases the volume of enemy footsteps by a modest amount. You also gain the ability to track enemy footprints.

Skulker

Increases your movement speed by a minor amount. Increases your crouch and prone speed by a modest amount. Increases your swimming speed by an impressive amount.

Frag Grenade

Cookable fragmentation grenade

Grappling Hook

Hook onto buildings and even moving vehicles or the RC-XD Killstreak, and disconnect to drop into a Wingsuit glide