Tak-Rethan Abyss Delve Guide: Location, Boss Strategies, and Trash

Tak-Rethan Abyss is a Delve located on the South side of Azj-Kahet, Khaz Algar.

This guide will providing the all the specifics you need to complete Tak-Rethan Abyss across all tiers of difficulties (from Tier 1 to Tier 11). We will cover delve events, optional bosses (rares), as well as, end of the dungeon boss and their abilities. If you like to learn about the rest of the Delves in Season 1, please see our overviews linked below.

Due to being underwater, an elixir that allows you to breath under water will be helpful. Yes, there are pockets of air that replenish the "breath" bar, but just for the safety it wouldn't hurt you to have a back up. Alternative version here is to bring Warlock for its Unending Breath ability.

There could be 3 possibility for events, all of the trash mobs however, including "mini-bosses" and actual end boss remains the same. below you will find the most common event of them:

• Destroy 0/100% Pheromone Crests (screenshot down below) and then immediately sends you to kill the final boss.

• Interrupt Kobyss Witherer's Abyssal Surge cast.
• Beware of Kobyss Bonechewer's Scavenge buff, any spare interrupts should go for Throw Junk cast.
• Deepwater Snapper will cast Snapper Slice on you, reducing your armor by 20% and otherwise be harmless.
• Interrupt Kobyss Necromancer's Necrotic Bolt and avoid their Defiling Breath frontal.
• Kobyss Spearfisher are the worst mob in this area due to their Spearfish cast, which grips you in melee and immediately hits you with Slashing Rend.
• Beware of Kobyss Trickster and its uninterruptable Illusive Step cast, he will create an illusion that will continue to attack you (Pale Illusion) and hit you with Cleave frontal cone ability.

• Avoid the Fungal Infection frontal ability. You can leave it channel and damage the boss this way without interrupting it!
• Sidestep the ground polyps when Undersea Abomination is casting Deepsea Polyps.
• Outrange the Repelling Blast ability (15 yards).