Mutated Heisenberg

Chapter: 11 · Heisenberg's Factory
Where: The Back Yard (Factory Entry), aboard **Heisenberg's Self-propelled Artillery**; the second phase on foot.

Weak point

Phase 1: the glowing red weak points, one on each arm and one at his base. Phase 2: the face (×2.0 from every gun) and the weak spot at the base of the third arm.

Prepare: read File #41 (Chris's Computer) and heal before you board the vehicle: inside you cannot heal, not even from the inventory. The vehicle has an infinite machine gun that never overheats and an infinite cannon with a reload after each shot; blocking (L) works while mounted.

Phase 1: break the weak points and use the cannon to interrupt his attacks. Phase 2 on foot: he has very little health left; F2 Rifle to the face from range.

Phase 2 supplies, hidden behind the metal sheets stuck in the ground: Explosive Rounds ×2 (E), Handgun Ammo ×30 + Shotgun Ammo ×15 (SW), Sniper Rifle Ammo ×12 (NW) and ×8 (S).

Reward

Crystal Heisenberg (70,000 Lei, automatic) and the Iron Giant Down challenge. Blitzkrieg (15,000 CP): beat him in under 4:00.

100,000 HP; at 9,000 his health locks and the on-foot phase starts, so that phase is the last 9,000. Vehicle damage at base value (multiply by your difficulty factor): cannon 16,000 on the weak point and 8,000 elsewhere; machine gun 400 / 200; chainsaw 60. Game8's weapons: F2 Rifle, V61 Custom, M1851 Wolfsbane and GM 79.

Village of Shadows: "you'll die after getting hit 3 times, even if you're blocking" (Game8). Only fire the cannon when he attacks with his right arm, and dodge the left. Stop shooting to move faster and keep him at range.
Knives Out: the vehicle's weapons are allowed in phase 1; on foot, the Knife only.

Step by step

Machine-gun the red points on his arms and base; Game8 suggests taking the arms off first. Breaking one stuns him briefly.
When he charges or winds up a strike, hit him with the cannon: it staggers and interrupts him. While the cannon reloads, drive sideways and block.
Wall of metal sheets: he raises it, then fires the sheets at you. Break it off with damage to his visible head or a cannon shot to the face. Sheets that stick in the ground become cover. Shoot down the drills he fires too.
Scrap tower: move sideways; the arena is huge. At the end he forms a tornado that pulls the vehicle in: cannon to the head as soon as it is ready. Ethan is thrown out (cutscene).
On foot: grab the ammo behind the sheets, run far, turn and F2 Rifle to the face (a few shots). The M1851 Wolfsbane to the face works too; GM 79 grenades interrupt his blade attacks and the shotgun punishes his misses up close.
When a third arm forms above him, shoot the weak spot at its base. You can't use Mines here; Pipe Bombs work. It ends in a cutscene: Ethan finishes him with the cannon.