Fever Dream is a Triumph that was added in Destiny 2's Season of the Haunted and is necessary for unlocking the Reaper title. Players will need to explore the Derelict Leviathan, searching for elite enemies. The in-game description for Fever Dream reads, "Defeat each of the powerful Nightmares within the Haunted Alcoves." Guardians will need to earn four separate Triumphs to finish the achievement, each of which can be completed in either the Royal Pools or the Pleasure Gardens.
Season of the Haunted has reintroduced the Leviathan, turning the ship from a Raid location into a free-roam destination. As the story explains, Calus has developed a connection to the Moon's Pyramid. As a result, the newly named Derelict Leviathan is plagued by a myriad of Nightmares. Calus has turned his Loyalist army into these horrifying enemies.SCREENRANT VIDEO OF THE DAY
Related: How To Complete the Battle Lines Triumph in Destiny 2
While exploring the Derelict Leviathan in Destiny 2, Guardians will stumble across various Public Events and powerful foes. Some of these are associated with various seasonal Triumphs. For example, earning the Reaper title requires that Players finish the Haunted Seal. This can be tricky, as many of the Triumphs are tied to random events or defeating specific foes. Luckily, each Nightmare connected to Fever Dream is located in a Haunted Alcove.
Destiny 2: Ritual Under Shadow Triumph
Ritual Under Shadow is one of the four Triumphs needed to earn Fever Dream. This requires Guardians to defeat Nightmare of Sy'ad, the Unending. He can be found in one of the two Haunted Alcoves in the Royal Pools. The area is located in the center of the back wall and is marked by corrupted tendrils at the entrance. Interacting with three ritual components summons the Nightmare. Players can complete the Ritual Under Shadow Triumph in Destiny 2 once the message, "Dark Ether thickens in the air..." appears on the screen.
Destiny 2: Drainage Triumph
The Drainage Triumph is earned by eliminating the Nightmare of Qalec, the Sniper. He can be found in another Haunted Alcove in the Royal Pools. This area is located in the back right corner of the room, next to the one containing the Nightmare of Sy'ad, the Unending. Guardians will receive the message, "A red laser briefly passes by your Ghost," when the target spawns. Additionally, there will be a number of lesser Nightmares in the corridor before the boss. Qalec, the Sniper, is found at the end of the hallway.
Destiny 2: Nightmare Breached Triumph
The Nightmare Breach Triumph in Destiny 2 requires the defeat of Kra'lok, the Sword, and the Nightmare of Ha'lok, the Shield. Both of these powerful enemies are in the same Haunted Alcove. Guardians must travel to the Pleasure Guardians and climb up the side of the cliff that faces the golden statue of Calus. A few ledges act as platforms, and the entrance emanates a blue light. Players will see the message, "A sword and shield clash together," once enemies appear inside the Haunted Alcove.
Related: Where to Find The Nightmare of Qalec, The Sniper in Destiny 2
Destiny 2: Sporest of Beasts Triumph
To earn the Sporest of Beasts Triumph, Guardians must defeat the Nightmare of Carun, Beastmaster in the Pleasure Gardens. The Haunted Alcove is located down a hatch in the back of the room, centered below the golden statue of Calus. Once the message, "A distant snore of sleeping War Beasts..." appears, eliminating some sleeping Nightmare War Beasts will spawn Carun, Beastmaster. After earning the Sporest of Beasts Triumph in Destiny 2, Fever Dream will be unlocked, bringing Guardians that much closer to the coveted Reaper title.