Kosis, The Revelation: A Detailed Guide in POE 2

In Path of Exile 2, Kosis, The Revelation is one of the most challenging and rewarding bosses, found in the late stages of the game. Known for its complex mechanics and high-stakes rewards, Kosis will test even the most seasoned players. If you're preparing for this encounter, here’s everything you need to know about Kosis, The Revelation—from where to find it to strategies for defeating it and the highly anticipated loot.

Where Is Kosis, The Revelation Located?

Kosis, The Revelation can be found during higher waves of the Simulacrum, one of the game’s most difficult endgame encounters. Players will need to progress through these increasingly challenging waves to encounter Kosis. Additionally, you can find Kosis in Realmgates, which are tied to high-difficulty areas in the Atlas of Worlds.

To reach Kosis, you’ll need to focus your farming efforts on Simulacrum and Delirium maps. The chance of encountering Kosis increases as the difficulty level ramps up. This means you’ll need to complete multiple waves in the Simulacrum and face increasingly difficult mobs before getting to Kosis.

Requirements to Access Kosis, The Revelation

To access Kosis, players must first acquire the Simulacrum Map Fragment. This fragment is essential for entering the Simulacrum, where the boss awaits. Gathering these fragments requires farming higher-end content or completing Simulacrum waves from previous runs.

Once you have the Simulacrum Map Fragment, you can access the Realmgate to face Kosis. Keep in mind that Simulacrum encounters are designed for high-level players, so come prepared with top-tier gear and a strategy to match.

Mechanics of Kosis, The Revelation

The fight with Kosis is not for the faint-hearted. This boss features a wide range of mechanics that require excellent timing, mobility, and precision. Here’s a breakdown of what you can expect:

High Mobility

Kosis moves quickly and unpredictably across the battlefield. This requires players to constantly adjust their positioning, dodging its attacks while still maintaining offensive pressure. Stay on the move at all times to avoid devastating damage.

Summons and Adds

During the encounter, Kosis will summon additional enemies—often powerful ones—that can quickly overwhelm you. These adds should be dealt with swiftly. Be prepared to manage them using AoE (Area of Effect) damage or crowd control abilities.

AoE Damage

Kosis has several AoE abilities that can cover large portions of the battlefield. These abilities are deadly, and avoiding them is crucial. Using mobility skills or defensive cooldowns can help mitigate the damage.

Buffs and Debuffs

Kosis has a mix of buffs and debuffs that it will apply to players during the fight. Some of these can cripple your damage output or movement speed. Be sure to either remove debuffs quickly or focus on positioning to avoid them.

Strategies for Defeating Kosis, The Revelation

Defeating Kosis requires more than just raw damage—it requires careful planning and execution. Here are some key strategies to help you win:

Focus on Mobility

Given Kosis’s speed and AoE attacks, staying mobile is crucial. Don’t stand still for too long, and be prepared to dodge or blink out of damaging zones quickly. Having a build with good mobility can make the fight much more manageable.

Control the Adds

Kosis will summon minions that need to be dealt with immediately. Use crowd control abilities like stuns, freezes, or AoE damage to keep these adds from overwhelming you. Prioritize these minions during the fight to reduce the number of threats on the battlefield.

High-Damage, High-Survivability Build

While dealing damage is essential, surviving the encounter is equally important. Focus on building a character that can dish out high damage while maintaining high survivability. Consider utilizing life leech, health regeneration, or strong defensive mods to keep yourself alive.

Prepare for Add Waves

At certain intervals during the fight, Kosis will summon waves of adds. Be sure to have AoE damage or single-target removal skills ready to manage these waves before they can overwhelm you.

Anticipated Drops from Kosis, The Revelation

Kosis, The Revelation is not just about the challenge—it’s about the rewards. Defeating this boss can grant some of the most valuable drops in Path of Exile 2, including unique items, crafting materials, and currency. Here are the drops you can expect:

Kosis' Revelation (Unique Armor)

This powerful armor grants substantial resistances, life, and defensive modifiers. It's one of the most highly anticipated drops for players looking to maximize their endgame builds.

Kosis' Heart (Unique Amulet or Jewelry)

This unique amulet offers life leech, movement speed, and various defensive buffs. It’s an excellent choice for players who want to improve their survivability in high-end content.

Simulacrum Shards (Currency Item)

These shards are used to progress through Simulacrum encounters. They can be traded for high-tier crafting materials, such as Artificer’s Orbs or Shards of the Abyss.

Revelation’s Jewel (Unique Jewel)

A rare jewel that provides bonuses to both damage and defensive stats, making it a valuable addition to various builds.

Glimpse of Eternity (Unique Flask)

This flask grants a short-duration buff that enhances damage mitigation, movement speed, or health regeneration. It’s perfect for surviving intense boss encounters.

Tainted Souls (Currency Item)

Tainted Souls are valuable crafting materials that modify Ruthless or Siphon modifiers on your gear, allowing for better optimization and customization of your build.

Exalted Shards (Currency Item)

These shards can be used to upgrade Exalted Orbs or create high-quality crafting materials. They are highly sought after by players who are serious about gear optimization.

Kosis’ Wrath (Unique Weapon)

A unique weapon specializing in either elemental or physical damage, Kosis' Wrath is perfect for endgame builds that focus on maximizing damage output against bosses.

Divine Essence (Currency Item)

This rare currency item Divine Orb can reforge the stats on your gear, making it an essential item for endgame players looking to perfect their equipment.

Champion’s Mantle (Unique Armor)

A powerful armor piece offering strong defensive stats, such as armor, energy shield, or evasion. This armor is ideal for players who prioritize survivability in tough encounters.

Final Thoughts

Kosis, The Revelation stands as one of the most formidable bosses in Path of Exile 2. With its complex mechanics and high risk/reward nature, this encounter demands preparation, strategy, and precision. By focusing on mobility, crowd control, and survival, you’ll increase your chances of success.

Make sure to farm Simulacrum fragments and complete Delirium maps to reach Kosis and secure the most coveted loot in the game. Victory is within reach, but only for those who are ready to face the challenge head-on. If you find it really hard and want to save your time, head to SSEGold for a carry run.