Sloth is one of the Mirror traits in the Vaas: Insanity DLC. It unlocks key tools and conveniences for Vaas, from more Healing Syringes and the Camera to the Wingsuit, Parachute and Grapple.
Vaas starts without the traversal tools Dani has in the main game. Sloth adds them back, along with extra syringe capacity and faster crouch movement. A later level also spawns rides at safe areas.
Walk up to the Mirror in a safe house and spend Cash, the currency you earn in Vaas: Insanity. Levels unlock in order, and each one costs more than the one before.
Yes. The Camera tags enemies, and the Wingsuit and Parachute make the map far easier to cross, since fast travel only works between linked doors.
Envy (Vaas)
Adds up to four gadget sockets to the weapon wheel.
Greed (Vaas)
Lets you keep more currency after dying, and at the top level recover your full inventory where you died.
Pride (Vaas)
Gives replenishing Healing Syringes, then raises maximum health in five steps.
Vaas' Wrath
Improves takedowns: speed boosts, reloads, small heals, front takedowns on alerted enemies and takedowns on Heavies.