The title Abyss Diver can be unlocked from the Abyssal Knight Quartermaster for 150 million shattered anima, which is obtained by playing the Shattered Worlds minigame.
This title changes according to the language of the server on which RuneScape is played, as shown below:
||[Name] der Höllentaucher / [Name] die Höllentaucherin
||[Name] le Plongeur des abysses / [Name] la Plongeuse des abysses
||Mergulhador Abissal [Name] / Mergulhadora Abissal [Name]
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