<P><B>Heavy:
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<P>Flamethrower: Not the most effective weapon in the heavy class, but it is the most fun. Conserve your fuel; it doesn't take much to set your target aflame. While on fire your target will not shoot at you, well most won't, and after a while they die smoldering.
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<P>GEP Gun: This is a must have, even stealth operatives should consider having one of these "lockpicks" around. Upgrading your heavy weapon skills will eliminate the slow movement you suffer when wielding this beast. If you have a solid tone, a rocket will track a target even as it moves away from you. WP rockets are another type of ammo that can be used to create an area effect flamethrower for a second. Don't forget to use them, as the regular rockets will tend to get used up quickly when you need to "open" a door.
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<P>LAW: I don't recommend carrying these around, but if you have the need to blow something up and one is handy, drop the GEP Gun and use this to save ammo. Beware, the explosion from a LAW is always bigger than you expect.
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<P><B>Demolition
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<P>Gas Grenades: Toss one into a room to immobilize all targets then finish them off with a GEP rocket or a LAM. Alternately, run past them and choke some damage down.
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<P>LAMs: Best used against bots if you can aim it well enough, or if possible, place in proximity mode in the path of the bot, just like in training. Also a good way to open locked chests, cabinets, and doors.