A build-focused breakdown of Path of Exile 2’s Return of the Ancients patch notes, covering class balance shifts, the Runes of Aldur league, and what returning players should prep before launch week.
Return of the Ancients Is a Soft Reset For PoE2 Builds
Return of the Ancients (patch 0.5.0) is the first update that really reshapes Path of Exile 2’s endgame. It folds every existing league mechanic into new questlines, rewires the Atlas and adds the Runes of Aldur league on top. For builds, this is effectively a soft reset: familiar skills work in a very different ecosystem, ascendancies move tiers, and mapping is no longer just “juice the favorite mechanic.”
Below is a build-centric tour of the patch notes so you know what actually changes when you log in on launch week.
The New League: Runes of Aldur and What It Means For Builds
Runes of Aldur is more than a temporary league gimmick. It behaves like a crafting framework that travels with your character from campaign to Atlas. You find Kalguuran rune tablets in maps, assemble them into inscriptions and run custom dungeons where you target specific runic rewards.
For most builds this matters in two big ways. First, league starts are less about gambling for that one meta unique and more about planning which runic bases you want to chase. Melee, bow and spell archetypes all get bespoke runic weapon and armor bases that roll extra league-only affixes. That makes early gearing smoother for off-meta picks, because a well-rolled runic base can carry you while traditional uniques remain scarce. Second, inscriptions can be targeted to upgrade weaker uniques into stronger variants. If you liked a niche item in earlier patches that never scaled into reds, Return of the Ancients quietly resurrects many of them as genuine endgame pieces.
For returning players the key mental shift is that “league mechanic” is now a progression tool first and a currency farm second. Treat Runes of Aldur as a way to pre-plan your item upgrades instead of something you only touch once your build is established.
Atlas and League Mechanics: Every System Becomes a Questline
Endgame is no longer a loose pile of mechanics. All legacy leagues attached to the Atlas now have guided questlines that walk you from first encounter to a dedicated Pinnacle boss. Instead of hoping to randomly stumble into a mechanic enough times to understand it, you get clear milestones and reward ramps.
For build planning that means two things. First, every build now has a structured path to the best-in-slot rewards associated with a mechanic. If you want Delirium-style cluster jewels, Bestiary-style crafting, or Legion-style splinters, there is a deterministic quest version of the Pinnacle encounter you can aim for. Second, respec value on the Atlas rises because you actually solve mechanics in sequence instead of sprinkling points everywhere. You can specialize around the mechanic that best aligns with your build’s strength curve then pivot once you claim its major rewards.
The patch also adds quest versions of all Pinnacle bosses that you can access deterministically alongside repeatable map versions. That makes “first atlas build” choices less punishing. You no longer need a god-tier character to see core bosses once; you can use a reasonably safe mapper to unlock systems, then roll a riskier glass-cannon after you know the fights.
New Ascendancies and Major Class Shifts
Return of the Ancients brings the new Martial Artist ascendancy for Monk and a Spirit Walker option for Ranger-style characters while also reworking several existing ascendancies. These changes are what will shuffle tier lists the most.
Martial Artist leans into mobile melee with powerful stance and combo interactions. It adds innate scaling to flurry-style melee skills, movement-based offense and reliable defensive layering tied to attack sequences. In practice this pushes Monk toward a fast striking, permadodge melee archetype that scales well on league-start gear. If you struggled to make melee feel safe in earlier patches, Martial Artist is the answer: it frontloads survivability in the ascendancy tree so you can reserve more passive points for damage.
Spirit Walker focuses on pet and spirit companions while giving bow and projectile builds access to powerful mobility and spirit-based buffs. The big shift here is that minion-style investments are no longer exclusive to dedicated summoners. Hybrid builds that mix personal damage with spirits or totems become much more viable, which opens up archetypes like self-attacking rangers who lean on spectral companions for clear and defensive utility.
Alongside the new classes, Gemling Legionnaire and Chronomancer receive sweeping reworks. Gemling doubles down on enhanced gem quality and Virtuous Barrier stacking for defense. That combination turns previously fragile caster hybrids into real tanks, capable of face-tanking many map situations that would have been one-shots in earlier versions. Chronomancer now gets easier access to delayed damage mitigation and temporal manipulation, so “time-shifted” hit windows are more forgiving. Builds that rely on ramping damage or charge-up mechanics will feel far smoother to level and play.
Taken together these shifts push class balance away from the very narrow early-meta favorites. Where previous patches rewarded simple, up-front damage skills that scaled trivially with gem levels, Return of the Ancients heavily rewards mechanical complexity: stance dance, timing windows and interaction with spirits all pay dividends.
Skill and Support Gem Changes That Actually Affect Builds
The patch notes are packed wall-to-wall with numerical tweaks, but a few broad trends stand out when you translate them into build decisions.
Projectile and bow skills receive targeted buffs tied to the new spirit and runic systems rather than raw number inflation. Flat damage buffs are modest, but interaction with spirit companions, runic projectiles and unique quivers means bow builds gain more ceiling if you invest in the new systems. This favors players willing to learn slightly more complex setups over those hoping for a single-skill screen cleaner.
Many melee skills pick up quality-of-life buffs and improved early scaling so they feel better during the campaign. Combined with Martial Artist, early Monks and Warriors no longer feel forced to play like pseudo-casters. Leaping between packs, chaining combo strikes and maintaining guard windows is smoother, so melee league starts become much more attractive.
On the caster side, several high-performing early-access skills lose some of their most abusive breakpoints. Damage-per-cast and hit frequency on popular clear skills are trimmed while defensive supports and mitigation tools get stronger. That is a deliberate attempt to reign in “smooth brain” clearspeed while nudging casters toward more deliberate positioning and mitigation stacking. You can still hit massive numbers, but you are expected to invest more into layers of defense than before.
Minion and totem skills tie more tightly into Spirit Walker and runic mechanics. Pure minion zerg builds are less explosive, but hybrid “you and your spirits” setups gain a lot from shared scaling stats and league-exclusive items.
Itemization, Runes, and Upgraded Uniques
Itemization is where Return of the Ancients quietly rewires how you think about powerful gear. Runic bases introduce affix pools that do not exist on ordinary items, especially for weapons. These bases also tend to drop in content you can plan around via inscriptions, so you are less at the mercy of random chance when hunting for upgrades.
In parallel, the ability to upgrade certain uniques through Runes of Aldur encounters changes how you evaluate early drops. A unique that looks mediocre at level 40 might now be the seed for an endgame chase piece, provided you commit to its associated runic path. That naturally encourages build identities that grow with your league plan instead of flip-flopping between whatever random drops you find.
Crafting-first builds such as self-found projects and solo players gain the most here. With deterministic access to both mechanics and bosses, they can pursue long-term item goals without leaning on trade. Trade league players, on the other hand, should expect early demand spikes around specific runic bases and upgradeable uniques that synergize with Martial Artist, Spirit Walker, Gemling Legionnaire and Chronomancer.
What This Means For Class Balance On Day One
With the broad nerfs to overtuned clear skills and defensive buffs concentrated in new and reworked ascendancies, the class balance picture shifts in a few clear ways.
Monk jumps toward the top for league start because Martial Artist offers both damage and safety in the ascendancy itself. You get reliable mobility, strong combo scaling and defensive windows without demanding rare gear. Bow rangers and hybrid Spirit Walker builds also climb thanks to the combination of spirit utility, runic bows and better access to projectile scaling in the Atlas.
Tankier casters built around Gemling Legionnaire are poised to replace older glass-cannon archetypes. Enhanced gem quality, combined with Virtuous Barrier, lets them layer mitigation while still pumping damage through high-quality skill gems. Chronomancer leans more into utility and encounter mastery, making it excellent for players who enjoy learning boss patterns and exploiting delayed damage windows.
Traditional early-meta spam skills that relied on raw numbers and movement speed alone fall off slightly. They are still playable, but if you return expecting your old build to feel identical, be prepared for slower clears and a stronger emphasis on survival.
How The New Endgame Structure Changes Build Goals
The new Atlas and league-quest structure radically changes what counts as a “finished” build. Instead of racing to generic red maps and farming one favorite mechanic, you are now working through distinct endgame storylines tied to every league system. Each questline culminates in its own pinnacle encounter and its own style of reward.
This encourages builds tuned to excel in specific content bands. You might start on a safe mapper that can comfortably progress the majority of questlines, then pivot to a boss killer tuned for a particular pinnacle you want to farm. Because access to these bosses is deterministic, you no longer have to roll the dice on map RNG to justify making a specialist character.
It also means early defenses are more important than pure speed. Questlines will push you into progressively nastier variants of a mechanic whether you are “ready” or not, so undergeared glass cannons will feel the squeeze sooner than they did in looser, opt-in systems.
A Launch-Week Checklist For Returning Players
If you are coming back for Return of the Ancients after skipping earlier patches, you should prepare a bit differently than you might have for Path of Exile 1.
Before launch, pick a simple league starter that has clear synergy with one of the new or reworked ascendancies. Martial Artist Monk, Spirit Walker bow or spirit hybrid, and defensive Gemling casters are all strong options because they line up with the patch’s strongest systemic buffs. Avoid banking on exact numbers you remember from older balance passes; many early-access outliers have been tuned down.
Plan to interact with Runes of Aldur from the moment you see it. Treat runic tablets as progression keys, not distractions. Decide early whether you want to chase runic weapons, armor or unique upgrades, and let that choice guide your farming and Atlas specialization.
Expect to spend time reading the new questlines and Atlas layout rather than blindly clicking through. Every league mechanic you used to treat as a side activity is now woven directly into progression and boss access. That means your build prep should include thinking about which mechanics your playstyle handles well. If you dislike on-death explosions and screen clutter, maybe delay the heaviest Delirium-adjacent content until your character is tankier.
Finally, be ready to invest more heavily in defenses than you might have in previous patches. The new ascendancies reward mitigation and encounter mastery, and Pinnacle bosses are balanced around characters that make use of those tools. A build that survives long enough to learn a fight will progress faster in this new structure than one that brute-forces maps purely on damage.
Return of the Ancients is the point where Path of Exile 2’s systems begin to look like a cohesive whole rather than a testbed. For build crafters and returning players, that means your decisions around class, league mechanic engagement and itemization matter more than ever right from day one.