.4B.06. Heavy Weapon

Find all Heavy Weapons in Mass Effect 2, including the M-920 Cain and Collector Particle Beam, and their upgrade locations.

Heavy Weapons:

• M-100 Grenade Launcher: Available during the Prologue.
• ML-77 Missile Launcher: Researchable after obtaining one Heavy Ammo upgrade.
• M-622 Avalanche: Researchable after obtaining two Heavy Ammo upgrades.
• M-920 Cain: Known as the "Nuke Launcher", researchable after obtaining three Heavy Ammo upgrades.
• Collector Particle Beam: Obtained on Horizon.
• M-490 Blackstorm Singularity Projector: Also known as the "Black Hole Gun", this is a GameStop Pre-Order DLC item.
• M-451: This Flamethrower is obtained during Zaeed's Loyalty mission.
• Arc Projector: This Arc/Chain Lightning Gun is unlocked via Cerberus Network Activation.

Upgrade Locations:

Note that upgrade costs are for the upgrade tier, not the location itself. Store-purchased upgrades do not increase in price, and their mineral cost is separate from research costs.

Assault Rifle Upgrades:

• 1. Omega, Recruit Professor, Slums: 2,500 Iridium. Unlocks Assault Rifle Penetration (15,000 Iridium).
• 2. Illium, Gateway Personal Defense: 90,000 Credits.
• 3. Haestrom, Recruit Tali: 5,000 Iridium. Unlocks Assault Rifle Accuracy (25,000 Iridium).
• 4. Omega, Samara: Loyalty, Morinth's Apartment: 7,500 Iridium.
• 5. Tuchanka, Fortack: 90,000 Credits.
• 6. Zorya, Zaeed: Loyalty* (Renegade-only route): 10,000 Iridium. (*Increases damage to 60% with all upgrades.)

Biotic Upgrades:

• 1. Horizon: 500 Eezo. Unlocks Biotic Duration (3,000 Eezo).
• 2. Illium, Recruit the Justicar: 1,000 Eezo.
• 3. Illium, Serrice Technology: 90,000 Credits. Unlocks Biotic Cooldown (5,000 Eezo).
• 4. Pragia, Jack: Loyalty: 1,500 Eezo.
• 5. Tuchanka, Fortack: 90,000 Credits.
• 6. Project Firewalker: Prothean Site DLC: 2,000 Eezo.

Bypass Module Upgrade:

• 1. Illium, Serrice Technology: 30,000 Credits.

Damage Protection Upgrades:

• 1. Citadel, Saronis Applications: 90,000 Credits. Unlocks Redundant Field Generator (15,000 Palladium).
• 2. Prison Ship Purgatory, Recruit Convict: 2,500 Palladium.
• 3. . Unlocks Hard Shields (25,000 Palladium).
• 4. Collector Ship: 5,000 Palladium.
• 5. N7: Anamlous Weather Detected: 7,500 Palladium.

Geth Shield Strength Upgrades:

• 1. Alarai/Tali: Loyalty: 2,500 Platinum.
• 2. Legion: Loyalty: 5,000 Platinum.

Hack Module Upgrade:

• 1. Omega, Harrot's Emporium: 30,000 Credits.

Heavy Skin Weave Upgrades:

• 1. Omega, Kenn's Salvage: 90,000 Credits. Unlocks Heavy Bone Weave (15,000 Palladium).
• 2. Horizon: 2,500 Palladium. Unlocks Heavy Muscle Weave (25,000 Palladium).
• 3. .
• 4. N7: MSV Strontium Mule: 5,000 Palladium.
• 5. Reaper IFF: 7,500 Palladium.

Heavy Pistol Upgrades:

• 1. Citadel, Rodam Expeditions: 60,000 Credits. Unlocks AP Heavy Pistol (15,000 Credits).
• 2. Haestrom, Recruit Tali: 2,500 Palladium.
• 3. Aeia 2175, Jacob: Loyalty: 5,000 Palladium. Unlocks Heavy Pistol Critical (25,000 Credits).
• 4. Tuchanka, Fortack: 60,000 Credits.
• 5. Citadel, Thane: Loyalty: (No cost listed).