Inscryption

Act 1. On your first death, Leshy has you build a custom Deathcard from your fallen character. Forced the first time you lose a run, so it comes very early.

Act 1. Defeat the Prospector, the first cabin mini-boss - on the critical path.

Act 1. Solve the cabin safe puzzle (the combination comes from the escape-room clues) to release a Stinkbug. Part of the required Act 1 progression.

Act 1. Defeat the Angler, the second cabin boss (the fishing-hook fight) - this also unlocks the Fish Hook used for Role Reversal.

Act 1. Work through the cabin puzzles to get the Caged Wolf card, then reduce it to zero health in a battle to free the wolf. Progression-gated.

Act 1. Defeat the Trapper/Trader, the third cabin boss - a two-phase fight where he flips from Trapper to Trader. Required to reach the Act 1 finale.

Act 1, second phase. After first beating Leshy you get free run of the cabin; solve the puzzles to place a magical eye in your empty socket. Needed to progress toward the true ending.

Act 1, second phase. After gaining the magical eye, solve the cuckoo-clock puzzle to get a spare film roll for the camera. Required to finish Act 1.

Act 1. Win the climactic card battle against Leshy himself - the conclusion of Act 1.

Act 1 to Act 2. Unlocks when Act 1 ends and the game "restarts" into the 8-bit overworld. Story-forced.

Act 1 (optional - do it before finishing Act 1). Land a killing blow with Squirrel damage: put a damage sigil on the Squirrel Totem, give a Squirrel the Leader sigil, or use the Amalgam (which counts as every creature).

Act 2. Complete Leshy's Temple of Beasts - one of the four temples on the main path.

Act 2. Complete Grimora's Temple of the Dead (also where you reach the Bonelord basement for Dark Offering).

Act 2. Complete P03's Temple of Technology.

Act 2. Complete Magnificus' Temple of Magicks - its compendium also helps track cards you're missing for Collective Effort.

Act 2 to Act 3. At the end of Act 2 the story hands control to P03, launching Act 3. Story-forced.

Act 3. Defeat the Archivist boss in Botopia (the fight tied to Agonizing Remorse).

Act 3. Defeat the Photographer, a mandatory Botopia boss.

Act 3. Defeat the Unfinished Boss (the incomplete/glitched boss). Required progression.

Act 3. Defeat the boss G0lly. Mandatory story boss.

Act 3 (late). A forced story cutscene near the end of Act 3 where P03 is killed.

Endgame. Reach and complete the game's finale/ending sequence - the story-completion capstone.

Act 1 (optional, Act 1 only). Visit the Mycologists twice in one run with three copies of the same card (Pack Rat works well). Let them merge a card, then merge the already-merged result again.

Kaycee's Mod (post-game). Deliberately make 10 blunders (attacking into nothing, wasting plays) in a single run. Easy to force on purpose.

Kaycee's Mod. Win a run with a full Challenge-Point bar for the first time - the first rung of the challenge ladder.

Act 1 (optional, Act 1 only). Needs the Fish Hook (from beating the Angler on a prior run). When the Angler - or Leshy in the final fight - hooks one of your cards away, use the Fish Hook to steal it back.

Act 3 (optional, Act 3 only). Give the Trader all five Holo Pelts to receive five Tarot cards - four pelts come from trapping rabbits around Botopia, one from the central shop. The Trader's door opens late in the act.

Act 2 (optional, Act 2 only). The Bonelord sits in the basement of the Temple of the Dead. Play both Broken Obol cards next to each other to form the Ancient Obol, then offer it to him.

Act 3 (optional, Act 3 only). Winning fights without dying raises your "wanted" stars; at three stars, Level-3 Bounty Hunters appear. Farm stars (clear or leave areas so bots respawn), then destroy - not just survive - a Level-3 Bounty Hunter card.

Kaycee's Mod. Clear a full-CP run for the fourth time - the second rung.

Kaycee's Mod. Clear a full-CP run for the eighth time - the third rung; the bars now stack tougher modifiers.

Act 2 (optional grind - the BIGGEST trap). Collect every card in the original Inscryption: farm Card Packs by winning fights without advancing to Act 3, and spend Foils on missing cards (the Temple of Magicks compendium shows what you lack). A few (Drowned Soul, Bone Lord's Horn, Great Kraken) need specific acquisition. Must be finished in Act 2 - moving to Act 3 locks it out for good.

Kaycee's Mod (grind). Pull a cumulative 32 teeth across any number of runs - accrues naturally as you play.

Kaycee's Mod. Clear a full-CP run for the twelfth time - the top rung of the standard ladder and the main grind target.

Act 2 (optional - effectively Act 2). Deal over 666 damage in a single attack (exactly 666 counts). Easiest with two Energy Conduits for infinite Energy plus an Emerald Mox to replay and buff a Stim Mage endlessly. It's about 11 minutes of clicking, so an autoclicker helps.

Kaycee's Mod (grind). Win at least one run with each unlockable Starter Deck (one at a time). The challenge rating can be zero and still count.

Act 3, the Archivist fight (optional). On PC: if the Captive File card dies during the fight, a text file is written to your save folder asking you to delete it - delete or move it, then win. On console: play the Captive File, then destroy it with the Hammer.

Kaycee's Mod. In the Leshy boss fight, strip the Moon's sigils with Magickal Bleach, then kill Leshy with an Airborne card (or the Harpie's Birdleg Fan) so you win without smashing the Moon.

Kaycee's Mod (grind). Unlock all three trinket items granted by the cabin's oil painting by meeting each one's condition across runs.

Kaycee's Mod (hardest). Win a full run with every challenge modifier switched on at once - the maximum-difficulty clear and the toughest achievement in the game.