Fat Molded (Not a Hero)

The head: one RAMROD to the head kills it on Normal and Professional

Two of them crash through the barricade in the middle of the Shield Machine as the third and last wave of the gauntlet, once wave 2 is over. Stun them with a Neuro-stun Grenade, then unload the shotgun (Thor's Hammer - AW Model-02) or put a RAMROD in the head. Their vomit can be blocked and their charge can be deflected (L right before the hit). Interior 2F, up the stairs, has RAMROD ×4 and shotgun ammo to restock mid-fight.

20,000 and 25,000 HP in the Shield Machine gauntlet (datamined). Normal: 2 (also 2 on Easy and Professional), both in the Shield Machine. Much tougher than the Fat Headless Molded: keep RAMRODs for them.