All Heavy Weapons collected and displayed in Hideout
For this trophy to pop you need to have the only Heavy Weapon in the game on display in your shed. See All Firearms Collected for an enhanced explanation on collecting weapons.Note: The title of this trophy is extremely misleading as the plural use of 'Weapons' is false, because there is in fact only the one Heavy Weapon to obtain which is the M60.
M60 (0:36): This can only be found in the Mission 15: Tunnel Rat. The weapon is on a couple of guards inside the compound. From the mission's starting point get the guard's disguise and make your way inside the compound. Kill the target and wait in the bedroom for a while until a guard walks in, kill him and take his M60. Holster the gun and extract, the gun is part of the uniform so don't worry about hiding from guards.