ne huge aberration 

Perception +35; darkvision, wavesense (imprecise) 60 feet

Skills Athletics +39

Str +10 Dex +5 Con +9 Int -3 Wis +0 Cha +0

AC  46; Fort +37, Ref +32, Will +27

HP 400; Immunities poison, disease, sickened

Alchemical Reaction [R] Trigger The alchemical horror takes damage from an alchemical bomb; Effect The volatile substances that compose the alchemical horror froth outward as they react with the bomb. The bomb's full effects affect creatures in every space within 15 feet of the alchemical horror, and splash damage affects creatures 5 feet beyond that.

Speed 20 feet, swim 50 feet

Melee [>] jaws +39 (acid, magical, reach 10 feet), Damage 4d8+18 bludgeoning plus 2d6 acid and Grab

Melee [>] pseudopod +37 (acid, magical, reach 15 feet), Damage 4d10+18 bludgeoning plus 2d6 acid

Alchemical Torrent [>>] (acid, evocation, primal) The alchemical horror spews a torrent of alchemical fluids in a 30-foot cone that deals 20d6 acid damage to creatures in the area (DC 43 basic Reflex save). The alchemical horror can't use this ability again for 1d4 rounds.

Swallow Whole [>] (attack) Large, 4d12+18 bludgeoning, Rupture 40.

AoE6, page 55.