The Uber Incarnation of Dread is one of the hardest timed events in PoE 3.27, and the event asks you to race, craft, and fight under pressure while managing your PoE 1 Currency for the best gear. The event gives rare loot and special rewards, but it also asks for perfect play and careful planning.
Start by joining the right event league from the character screen. Look at the league list on the screen and pick the event entry named for the Incarnation event. Create a new character in that league. The game does not let you move characters from other leagues into the event. This rule keeps the fight fair and makes the race real. New players must level fast and get gear quickly to reach the endgame for the Uber fight.
Rush through the campaign and push into maps as fast as you can. Complete Acts 1 to 10 and then work your atlas until you can run high-tier maps with ease. Farm the maps that drop the standard Incarnation of Dread and run them until your gear and flasks can handle hard fights. Trade rare drops when you need to buy missing pieces, and use PoE 1 Currency to finish key upgrades so your build can survive the Uber encounter. Fast, steady runs and focused trades cut the time to the endgame.
Collect the Incarnation Fragments from the base boss to build the Uber key set. Defeat the standard Incarnation of Dread many times to get the fragments. The encounter usually needs four different fragments — each named for a theme like Dread, Terror, or Void — and you must fill all four slots. If you clear maps quickly but miss a fragment, look for other players to trade with or sell your extra items for currency to buy the missing piece. Work with groups to speed the grind if you can.
Open the Uber portals only when you have the full set of fragments and you are ready for repeated heavy damage. Put the four fragments into the map device in your hideout and press activate to open the six portals. The portals lead to the Uber arena. Watch the portal rules: if you die six times while the portals are open, the portals close and you must make a new set of fragments. Sell excess drops and trade for gear if you need more Poe 1 Chaos Orb to buy final stats before you launch the fight.
Make sure your resistances are capped and that your life or energy shield is high enough for big hits. Bring strong utility flasks and check your movement options so you can dodge fast patterns. Test your build on similar fights first and tweak gear where it matters most. If you lack a key defensive or offensive item, sell what you do not need and use those funds to buy that missing piece with PoE 1 Currency. Keep your flasks and slots clean and your actions simple in the arena.