
Primary attributes, defenses, Spirit, and controls
Stats, life and energy shield, resistance caps and campaign penalties, Spirit for persistent skills, dodge roll, and Ascendancy trials.
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Core PoE 2 systems for campaign and early maps. Patch-dated and confidence-flagged — we re-check before publishing each lesson.

Stats, life and energy shield, resistance caps and campaign penalties, Spirit for persistent skills, dodge roll, and Ascendancy trials.
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How the shared passive tree works, flexible attribute travel nodes, Weapon Set Points and dual specialization, Keystones, and how to respec.
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The 8 released base classes, their starting attributes and weapon identities, all confirmed Ascendancy sub-classes, and how Ascendancy choice and respec actually work.
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How tagged passive nodes, skill-to-weapon-set assignment, and auto-swap actually work — the practical UI side of the mechanic introduced in the passive tree lesson.
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How the Skills Window replaces gear sockets, Uncut Gem engraving, Jeweller's Orb socket progression, how attributes actually gate your support gems, and Meta Gems.
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How gear sockets work now that skills live in the Skills Window, the difference between Runes and Soul Cores, where Soul Cores come from, and how socketing and overwriting actually work.
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How the Heavy Stun bar works on bosses, Light Stun vs. Heavy Stun, why Freeze and Electrocute are separate meters from Heavy Stun (not elemental versions of it) and how Electrocute actually requires a specific enabler, the melee/physical stun bonus, and diminishing returns against stun-locking.
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The 75% resistance cap and why it isn't the whole story, the campaign penalty that quietly eats your resistance as you progress, why Chaos Resistance plays by different rules, and the defense-stack mechanics (Energy Shield, ailments, Block/Evasion) that actually decide whether a hit kills you.
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How Life and Mana Flasks actually recover (over time, not instantly), why POE2 has no utility flasks anymore, what Charms are and how they auto-trigger, and the practical failure modes — flasking too late, assuming a charm is permanent immunity, and running dry mid-fight.
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The orb-by-orb list of POE2's crafting currency — Transmutation through Mirror of Kalandra — and one Path of Exile 1 currency that doesn't exist here.
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What a .filter file actually is, why the campaign is unreadable without one, how to install NeverSink and pick a strictness tier, and when to step up as you enter maps.
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When the Currency Exchange unlocks, how order matching works, how gear trades (whispers vs Ange and Merchant's Tabs), and what currency flipping actually means.
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