here's what you need to build to get these weps and vehicles. I left off many weapons, but the ones I left off I never use (...'cause they suck!). So don't worry about the Neutron gun or anything like that ;P

Quill -- Dower/Kiln
Sonic -- Dower/Overseer/Forge
Arc -- overseer/stronghold

Gauss -- Dower/kiln
Jax -- stronghold/antennae
Popper -- antennae
Sand Bag -- Stronghold

Super Stabber -- Service Bay/Comm
Plasma -- armory/s-bay
MAG -- armory/relay/tech
Rocket Bomb -- Armory/tech

Sentry -- Kiln
Sentinel -- Forge/Dower
Lancer -- Kiln/Antennae
Warrior -- Forge
Archer -- Forge/Overseer
Mauler -- Kiln/Dower/Antennae
Titan -- Forge/Overseer/Stronghold
Rage -- Antennae/Forge
Fury -- Forge/Overseer/Dower/Stronghold

Razor -- Factory/Bunk
Interceptr -- Factory/Comm
Missile Scout -- Factory
Sabre -- Factory/Comm
Broadsword -- Factory/Comm/S-bay/Armory
Hellcat Rocket Tank-- Factory/Comm/Armory
Assault Tank -- Factory/S-bay/Comm
Atilla Walker -- Factory/Tech
APC -- Factory/Train
Valkyrie -- Training