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  "description": "A complete breakdown of the new trophy categories and every hidden achievement tied to Duomension City and Planarcadia.",
  "path": "/honkai-star-rail-hidden-achievements-and-duomension-city-list/",
  "publishedAt": "2026-06-03T09:28:24.000Z",
  "site": "https://allthings.how",
  "tags": [
    "@Gate"
  ],
  "textContent": "Honkai: Star Rail's Duomension City and Planarcadia content added 122 distinct achievements, and a large share of them stay hidden until you trigger the exact condition that unlocks them. They span the main story, exploration, mini-games, combat, and a set of branch choices where only one trophy in a group can be earned per playthrough. The trickiest ones sit under the **Fathom the Unfathomable** category, which leans heavily on the Interplanar Jump! mode and odd interactions scattered around the map.\n\n🏆\n\nQuick answer: There are 122 achievements in this batch. Many are hidden and will not appear in your Achievement menu until the trigger fires. When one unlocks, a banner pops on screen and the trophy moves to your completed list with its Stellar Jade reward.\n\nHonkai: Star Rail (HoYoverse)\n\n* * *\n\n## Achievement categories in the Duomension City batch\n\nThe 122 trophies fall into a few clear groups. Story-linked ones unlock automatically as you clear chapters, while the rest reward exploration, mini-game mastery, and curiosity around decorative objects.\n\nCategory| What unlocks it\n---|---\nMain story| Roughly 11 trophies that pop as you pass major plot checkpoints. No hunting required.\nExploration and discovery| About 53 trophies for chests, secret rooms, hidden props, and optional map challenges.\nMini-game and unique interactions| Interplanar Jump! and similar challenges with strict conditions like staying airborne or triggering tiles.\nWorld events and hidden encounters| Off-map events from interacting with unusual objects, NPCs, or unmarked zones.\nBranch choice (mutually exclusive)| Quest decisions where only one trophy in a set can be earned per run.\nCombat| Trophies for using specific abilities or winning under set conditions against new enemies.\nHonkai: Star Rail (HoYoverse)\n\n* * *\n\n## Full hidden achievement list\n\nBelow is every hidden trophy in this batch, grouped by its in-game category. Use it to check off what you still need before leaving Duomension City and Planarcadia.\n\nCategory| Achievement| Unlock condition\n---|---|---\nEager for Battle| Straight Fire Unreal Banger| Use Sparxie to activate \"Engagement Farming\" and build 9 \"Straight Fire\" stacks in one battle.\nEager for Battle| Trap Within a Trap| Use Sparxie to trigger \"Engagement Farming\" 10 times in a single action.\nEager for Battle| Lucky Charm| Use Yao Guang to trigger \"Great Boon\" 18 times in one battle.\nEager for Battle| May the Fortune Be With You| Collect 8 \"Fortune Pouches\" through Yao Guang's Technique \"Untethered Glimmer Sails Far\".\nEager for Battle| All for the Show| Have Aha use \"Aha Instant\" while dealing only 0 DMG.\nEager for Battle| Who's Laughing Now?| Defeat 1 enemy with Aha's \"Let There Be Laughter\".\nMoment of Joy| Safety Comes First on Every Road| Get up close to a car in the middle of Duomension City's streets.\nMoment of Joy| Go to A New World| Get hit by a hydro-car during an Interplanar Jump! sequence.\nThe Memories We Share| Time For Whispers| Infiltrate the CEO's conference room.\nThe Memories We Share| Aeonic Silence| Look at the portraits of the Aeons in the tavern.\nThe Memories We Share| The Fool and the Alchemist's Gate| Build your own elemental toilet.\nThe Memories We Share| Block Subspace| Uncover the secrets of the golden throne.\nThe Memories We Share| Reunion is Prologue| Witness Bequea's final journey back into the television.\nThe Memories We Share| If I Can Bring You Happiness| Witness Bequea and Rocket keep their promise to become family.\nThe Memories We Share| Hardboiled Detective| Stop the \"Millennium Killer\" with Ashveil using traditional methods.\nThe Memories We Share| Armchair Detective| Use Sparxie's modern methods to turn the \"Millennium Killer's\" tactics back on them.\nThe Memories We Share| Dandelion's Judgment| Let Sapone fulfill their wish.\nThe Memories We Share| The Crime is \"Love\"| Have Sorren accept lawful punishment.\nThe Memories We Share| Make Dough with Dignity| Choose to sell the pixel plane game to the IPC.\nThe Memories We Share| Walk with the Divine Sage| Reject the IPC's attempt to buy the pixel plane game.\nThe Memories We Share| Sunset VI| Fulfill Kraken's wish to roam beyond the sky.\nThe Memories We Share| Encyclopedia of Scams| Firmly reject Master Moon.\nThe Memories We Share| A Bet to End All Bets| Spend a fortune to become the only one of Master Moon's \"disciples\" to be fooled.\nThe Memories We Share| Homo Economicus| Escape when faced with Master Moon's eloquence.\nFathom the Unfathomable| When The Phantasmoon First Shone Upon Mortals| Go to the @Gate of Duomension City and gaze at the Phantasmoon.\nFathom the Unfathomable| Ascend to the Peak of Trailblaze| Reach the top of the Trailblazer's poster in Duomension City.\nFathom the Unfathomable| Catherine| After Sparxie pulls you into the 2D world, gain a new form and escape.\nFathom the Unfathomable| Hold On Tight and Put Phones Away| Ride an escalator once in Planarcadia.\nFathom the Unfathomable| Don't Try This At Home| Move against the escalator for 10 seconds or more.\nFathom the Unfathomable| Ping Pong| During \"Jump Time\" in Interplanar Jump! at Perdido Station, flip gravity to bounce the wispae back and forth.\nFathom the Unfathomable| Secret Storage Room| Enter the secret room in Graphia Academy's indoor gymnasium.\nFathom the Unfathomable| Lonely Are All Bridges| Reach the hidden plane during an Interplanar Jump! on Dovebrook Bridge.\nFathom the Unfathomable| Thorny Mask| Survive after taunting the Fool's Mask at the tavern.\nFathom the Unfathomable| Super Third Wheel| Witness the love of the paper crane.\nFathom the Unfathomable| Why'd You Do That?| Knock down the Billboard running in the tavern.\nFathom the Unfathomable| Here Used to Be Dragons| Find the treasure at the end of the Grand Treasury.\nFathom the Unfathomable| Let's Not Trailblaze Here| Open the secret room of the Golden Confessional.\nFathom the Unfathomable| Let Out a Wistful Tweet| Find a familiar feather in the tavern.\nFathom the Unfathomable| 2D Aficionado| Complete the Ultimate 2D Challenge on Blisstar.\nFathom the Unfathomable| Curving Arrow| In Interplanar Jump!, shoot an arrow that curves in flight.\nFathom the Unfathomable| Springleg Jack| Bounce 10 times in Trampoline: Introductory Training.\nFathom the Unfathomable| Let's Go Karaoke!| Eavesdrop on the melody from the karaoke bar in Duomension City or Dovebrook District.\nHonkai: Star Rail (HoYoverse)\n\n* * *\n\n## Branch choice trophies you can only get once per run\n\nSeveral decisions lock you out of the opposite trophy in the same playthrough. Plan these before you confirm a choice, or expect to clear the content again to pick up the alternative.\n\n  * **Hardboiled Detective** or **Armchair Detective** — the method you pick to stop the \"Millennium Killer\".\n  * **Make Dough with Dignity** or **Walk with the Divine Sage** — selling the pixel plane game to the IPC versus rejecting them.\n  * **Encyclopedia of Scams** , **A Bet to End All Bets** , or **Homo Economicus** — how you respond to Master Moon.\n\n\n\n* * *\n\n## How to unlock the trickier hidden achievements\n\nHonkai: Star Rail (HoYoverse)\n\n### When The Phantasmoon First Shone Upon Mortals\n\n**Step 1:** Teleport to the @Gate area of Duomension City and head straight ahead along the path.\n\n**Step 2:** Turn at the corner and interact with the marked point.\n\n**Step 3:** Follow the route to the next waypoint and gaze at the Phantasmoon to finish the trophy.\n\n### Ping Pong\n\n**Step 1:** Travel to Perdido Station and interact with the button to enter Interplanar Jump! Difficulty I.\n\n**Step 2:** During Jump Time, flip gravity repeatedly so the wispae bounces from one end of the arc to the other several times. The trophy unlocks once you keep it ricocheting.\n\n### Springleg Jack\n\n**Step 1:** Talk to Xiao Gao to start the Trampoline: Introductory Training interaction.\n\n**Step 2:** Pull the lever above, then bounce back and forth at the marked spot until you hit 10 bounces.\n\n### Let's Go Karaoke!\n\n**Step 1:** Teleport near the karaoke bar in Duomension City or the Dovebrook District and walk up to its doorway.\n\n**Step 2:** Stand in front of the door and wait. The melody plays for about 5 to 6 minutes before the trophy registers, so stay put.\n\nHonkai: Star Rail (HoYoverse)\n\n* * *\n\n## How to confirm a trophy unlocked\n\nWhen the condition is met, an achievement banner appears at the top of the screen, and the trophy moves into your completed Achievement list with its Stellar Jade reward attached. If a hidden one does not pop, the usual cause is a condition you did not fully satisfy. For example, falling short of the required stack count, choosing the opposite branch in a mutually exclusive set, or leaving an Interplanar Jump! stage before reaching the hidden plane.\n\n📌\n\nNote: Because many of these stay hidden until triggered, it is easy to walk past them during normal play. Run through the exploration and mini-game conditions before you finish the area so you do not have to backtrack later.\n\nClearing the whole set is one of the steadier ways to bank Stellar Jade, since each trophy pays out on unlock alongside the larger completion rewards. Work through the branch choices first, then sweep the Interplanar Jump! and tavern interactions, and the rest of the count falls into place as you explore Duomension City and Planarcadia.",
  "title": "Honkai: Star Rail hidden achievements and Duomension City list",
  "updatedAt": "2026-06-03T09:28:24.876Z"
}