Sets

Sets are themed six-piece Equipment collections that drop only from Expeditions. Unlike crafted gear, set pieces can never be crafted or bought — you earn them by running biome patrols, caves and guardians. Wearing all six pieces of a set grants an extra set bonus on top of the individual pieces' stats.

There are ten biome sets — one for each biome — plus the boss-only Riftforged set from the Rifts and the endgame Primal set won in the Alpha Arenas.

How sets work

Each set has six pieces, one for every Equipment slot: a Spear (weapon), Helm (head), Cuirass (chest), Greaves (legs), Aegis (shield) and Talisman (trinket).
Individual pieces give the usual attack or defense for their slot, exactly like other gear.
Equipping all six pieces of the same set adds a flat expedition-score bonus — a boost to how well you perform on Expeditions in addition to the raw stats.
Sets scale with the biome ladder: each biome's set is roughly tuned so that the full set (with its bonus) carries you into the next biome's patrols.
Duplicate pieces are not wasted — extras vendor for Amber.

How to obtain set pieces

Every biome set drops only from that biome's own Expedition content, at rising chances:

Patrols — a small chance per piece on each patrol win.
Caves — a better chance per winning delve.
Guardian — the best chance, on the biome's guardian.

Because pieces are biome-locked, completing a set means farming the Expeditions of that specific biome.

The ten biome sets

Sets are listed in biome-ladder order. "Weapon Atk" is the Spear's attack; "Armour Def" is the defense on each of the Helm, Cuirass, Greaves and Aegis; the Talisman gives the listed attack and defense; "Set Bonus" applies when all six are worn.

Set	Biome	Weapon Atk	Armour Def (each)	Talisman Atk/Def	Set Bonus
Thunderfoot	Grasslands	10	8	2 / 4	3
Wildwarden	Redwood Wilds	14	12	2 / 5	5
Murkscale	Murkwater Swamp	20	16	3 / 6	7
Hollowcrown	Cavern Depths	24	20	4 / 6	4
Cinderplate	Scorched Badlands	32	26	5 / 8	5
Tideglass	Coral Shallows	38	31	6 / 10	6
Rimehide	Frozen Wastes	40	33	6 / 11	7
Ashforged	Ashen Peaks	55	46	9 / 13	9
Skyborne	Skyreach Plateau	64	53	10 / 16	10
Sundered	Sundered Vale	72	59	11 / 17	11

The Riftforged set

The Riftforged set bridges the gap between the Sundered set and the Primal set. Unlike the biome sets, it does not drop from patrols, caves or guardians — its six pieces come only from the rift bosses, at designated slots, 5% per piece per boss win:

Rift Warden → Visor (head) and shield
Twin Sovereigns → Plate (chest) and legs
Riftheart Colossus → Cleaver (weapon) and Idol (trinket)

Weapon: 85 attack (Riftforged Cleaver)
Armour (each of head, chest, legs, shield): 68 defense
Trinket (Riftforged Idol): 13 attack / 20 defense
Full-set bonus: +20 expedition score
Duplicate pieces vendor for 780 Amber each.

The Primal set

The Primal set is the single strongest gear in the game, sitting above every biome set. Its six pieces — the Primal Warspear, Visage, Carapace, Striders, Bulwark and Idol — drop only from Alpha Arena wins, at chances that rise with the arena tier. Nothing above it exists.

Weapon: 101 attack (Primal Warspear)
Armour (each of head, chest, legs, shield): 83 defense
Trinket (Primal Idol): 15 attack / 24 defense
Full-set bonus: +30 expedition score