Ultimatum Boss drops a full stack of a random Catalyst
Ultimatum Encounters in your Maps have 30% increased chance for the final Round to include a Boss
When encountered as a boss, the Trialmaster will teleport the player to a small circular arena. This arena also contains hazards selected from the Ultimatum encounter preceding this fight, and the encounter can be failed either by dying or by gaining 7 stacks of Ruin. Defeating the Trialmaster will teleport the player back to the original area, dropping the accumulated rewards as well as one of his exclusive unique items.
Abilities
Abyss Slam: "Fall before me!" – Charges up, slamming the ground and launching a blue Ground Slam/Sunder in a direction
Cyclone: Swings his weapon around while moving slowly towards the player for a duration
Shockwave: "Feel his power!" – Charges up, slamming the ground and causing a red shockwave in an area
Trialmaster’s Heart: "Be still!" – Places his heart in the arena, linking via a chain (Trialmaster’s Tether) to the player. Moving away from the Heart will sever the link, causing Physical Damage and always inflicting Stun with 250% increased duration
Spear Pulse: "Chaos aid me!" – Fires a ground-targeted spear towards the player which causes a Physical nova
Tri-Elemental Mortar: throws three projectiles, each doing Fire/Cold/Lightning damage
Spike Mortar: throws five projectiles dealing Physical damage
Omega Projectile: Fires a large blue orb that bounces off the arena’s walls, exploding on impact
Timestop Slam: "Ultimatum!" – Pauses time, teleporting and slamming the ground three times, causing delayed red Sunders
Timestop Projectiles: "Might of Chaos!" Pauses time, teleporting and creating three blood orbs that bounce off the arena’s walls, exploding on impact
Hostile Currency: "Take it. Go ahead." – Summons interactable Chaos Orbs and Vaal Orbs around the arena which drop their respective items when clicked
Ultimatum Modifiers in your Maps start a Tier higher if possible
Ultimatum Rewards in your Maps have 25% chance to be duplicated
Unreal Ultimatum(4) Affliction 3.23
Complete each of the following Ultimatum encounters.
Complete Ultimatum Waves (0/200). Face The Ultimatum(atlas passive): Your Maps have +15% chance to contain an Ultimatum Encounter.
Fully Complete Ultimatums in Red Tier Maps (0/20). Slaughter Them All(atlas passive): Ultimatum Encounters in your Maps have 100% increased chance to require you to defeat waves of Enemies, Ultimatum Encounters in your Maps requiring you to Defeat waves of Enemies require killing 20% reduced number of Enemies.
Complete Red Tier Inscribed Ultimatums (0/10). Inscribed Ultimatum Reward Chance(atlas passive): Ultimatum Rewards in your Maps have 10% increased chance to be Inscribed Ultimatums.
Defeat the Trialmaster in a Tier 16 Map that is at least Rare. Ultimatum Boss Chance(atlas passive): Ultimatum Encounters in your Maps have 10% increased chance for the final Round to include a Boss. Brave The Tower(atlas passive): Ultimatum Encounters in your Maps have 30% increased chance for the final Round to include a Boss.