Bloodborne - The One Reborn (Boss Guide) @F8LFool
Bloodborne - The One Reborn (Boss Guide)  @F8LFool
Uploaded March 2015 | Updated September 2026, 2 weeks ago
The One Reborn has very few attacks and for the most part can be rushed down to its death. The only things you need to look out for are special attacks that are triggered at different health totals, which also transform the way it looks and therefore how you should approach it.

There are also six magicians that are stationed above the catwalks of the square that you battle the boss in. Half are throwing down miniscule heals to the boss (purple spheres) and the other half are attacking you with fire. The heals are so insignificant that they can basically be considered non-existent, as is the damage the fire deals to you—it’s more of a nuisance than an actual threat.

I suggest simply ignoring the magicians and blitzing the boss. It can launch blood attacks at you from range which do decent damage but are easy to see and dodge. It also can spew acid in front and near the sides so don’t go near either. If you go inside a building or underneath the catwalks it will rain down bones and bodies above you, so avoid that, which is easy since you should be at the boss 90% of the time anyhow.

The boss can only hit you with its forearms, rear legs, and tiny legs on the side. Directly underneath its head and “tail” are red masses that you can unload on at will. There is a space to dodge through between the hind and rear legs to reach the back, so do that and stay on it relentlessly until ~50%. You’ll see him do a loud roar and red light will appear which can almost instantly kill you if you are in front or on the side, so be sure to run away if you aren’t directly behind it.

At ~30% his “tail” will collapse and start raining down bones on you. This is your cue to get away as fast as possible. If for some reason it doesn’t start the attack at around 20 to 25%, just run away on your own. The reason being that in the process of falling apart a ton of acidic bile will fill almost the entire square so head underneath the catwalks where it is safe.

The second the acid evaporates you need to run and attack the very front of him. Your old point of attack will no longer be there because it was destroyed. Keep attacking until it dies and be sure to heal whenever you are under 60%.
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Bloodborne - The One Reborn (Boss Guide)

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