Pulling the pin starts a 5 second timer to an explosion. Make sure you've thrown it by then.
No tips here yet — be the first survivor to leave one.
Leaving tips is for survivors on the rewards list — reserve your rewards with your e-mail once and the form unlocks everywhere.
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Admin Blink Rifle 
Assault Rifle 
Bola 
Boomerang 
Bow 
Cluster Grenade 
Compound Bow 
Crossbow 
Cruise Missile 
Electric Prod 
Fabricated Pistol 
Fabricated Sniper Rifle