The Petrusite grenade is a type of grenade featured in Killzone: Shadow Fall . It is only seen on multiplayer and it can be equipped by the Support Class. It serves as an incendiary grenade that deals constant damage to a single area, and it is often used at chokepoints to deny the enemy team from a specified area. Once cooked, the head of the petrusite grenade starts spinning, and once thrown it emits a constant flare of irradiated petrusite , similar in effect to it's Killzone 2 counterpart, the TR-X Teslite grenade.

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