This dossier section is intended to be an exact copy of what Dr. Sophia, the author of the Patient Notes has written. There may be some discrepancies between this text and the in-game creatures.
Moderately docile, but becomes aggressive when approached. The subject utilizes natural landscapes and rock formations as weapons, hurling them towards any opposing threat. The subject becomes strangely calm when given alcoholic beverages - a reaction not typically seen in alcohol-enthusiasts.
There are few words that can describe the changes that have occured in the subject. To an incredible degree, the subject appears to have had a boost in its intelligence. Rather than utilizing the landscape around it, the subject now chooses its primary food source as a weapon. Hauling a large cask of beer about, it uses the barrels as a weapon to fend off intruders. Clearly, however, it has overdone itself, as the subject displays signs of heavy intoxication, including the inability to control itself when it comes to bodily functions - the stench of its breath alone would be enough to sicken anyone around it, but in the form of a deep belch it is nearly impossible to avoid being knocked silly by the putrid smell.
This section describes how to fight against the Obsidioequus.
The Obsidioequus does not summon minions making it easier to fight, without having to switch between melee and ranged weapons. With proper armor the boss does not deal too much damage making it ok to stay put for a while with medical brews. The Obsidioequus (Like the Chalicotherium) has a dirt or poop attack that deals torpor, so stimulants are required.
Use long range weaponry and always have stimulant on hand (compound bow or shotgun is recommended). If you have a good sword you can get under its belly and defeat it by slicing its belly.
The obsidoeqqus can throw barrels and it can repeatedly throw dirt and do a lot of torpor. The barrel attack can also launch you very high up so be careful. The room is also full of beer that makes you drunk so you cant see properly
Hiding below it's belly and attacking it with a melee weapon is a good strategy (if you have a lot of health and/or damage resistance)
The Obsidoequus is regarded as one of the easiest bosses.
The Obsidoequus was the first boss to ever be fought by 10 players at once.