Fall of Cybertron (Xbox 360)
EDIT: As requested, now includes the upgrades for the weapons in the list. Thanks Robster.
Weapons:
Photon Burst Rifle
Ion Cartridge
Hyper Interlink
Tachyon Transmitter
Photon Accelerator
Subsonic Repeater
Cyber Optics
Amplifier Pak
Tachyon Transmitter
Turbo Booster
Nucleon Charge Rifle
Hyper Interlink
Ion Cartridge
Quantum Stabilizer
Dominator
EDK Techvolt
Amplifier Pak
Hyper Interlink
Energo-Cell Conductor
Anti-Thermo Suppressor
Riot Cannon
Hyper Interlink
Sonic Blast
Ion Cartidge
Planet Buster
Neutron Assault Rifle
Amplifier Pak
Cyber Optics
Quantum Stabilizer
POKE Beta
Path Blaster
Tachyon Transmitter
Quantum Stabilizer
Hyper Interlink
The Gambler
Scatter Blaster
Ion Cartridge
Hyper Interlink
Quantum Stabilizer
Fireblast
Retro Blaster - PreOrder Gamestop Bonus (G1Retro Pack don't think it counts for the achievement, no upgrades, rate only)
Electro Bolter - Finish the game to unlock this one - no upgrades, rate only
Heavy Weapons
Chaos Rift Combustor
Hyper Interlink
Cyberthermic Frag
Corrosive Slime Cannon
Amplifier Pak
Sonic Blast
V32.CYBR CORRUPT@R
Amplifier Pak
Hyper Interlink
Gear Shredder
Torque Ripper
Amplifier Pak
Energon Harvester
R-Infinity Finder
Reaper
A-4 Pulsar Cannon
Transwarp Ballistics
Cyberthermic Frag
X18 Scrapmaker
Cyber Optics
Ion Cartridge
Thermo Rocket Cannon
Amplifier Pak
Omega Pulse Charge
Sling Shock - G1 Retro Pack Gamestop Preorder Bonus. Like the retro blaster, don't think it counts towards the cheeve - no upgrades, rate only.
Glass Gas Cannon - unlock by finishing the game - no upgrades rate only.
Assault TECH
Mark 0 Orbital Beacon
Thermo Mine Payload
CLUTCH
Dimensional Decimator
Utility TECH
Ultra-Power Core
Energon Recharger
Diffraction Barrier
Intercooler
Perks
Health Matrix
Ammo Disperser
Armor Supercharger
Roadkill
Scavenger's Special
Ion Ability Dampener
Master Leg Servos
Shield Sparker
Cheap Shot
Energon Buffer
Took me 2 complete run throughs of the game to afford everything. And I still haven't gotten the cheeve for spending $250000 shards yet.