INDIE GAME / PLAY GUIDE
Islets: 44 achievements | Collection, quests and Boss Rush conditions
Covers the main story, 16 bosses, directions to 60 upgrades, six ship parts and 44 achievements; remaining gaps stated · Updated 2026-10-13
Separate difficulty-specific Boss Rush conditions from ordinary purchases and collection. Do not assume a card upgrade necessarily earns a shop-purchase achievement; follow the relevant condition.
All conditions for 44 Steam achievements
English achievement names are identifiers. Includes late-story and ending spoilers. Unlock rates are not used as gameplay success probabilities.
| Achievement | Condition | Action to check |
|---|---|---|
| A Little Stronger | One upgrade item | Collect the first choice card |
| Root of Evil | Defeat Grave Crawler | Reach Double Jump on the first island |
| Keeping Up with Friends | Open the Post Box | Sky City's shop area |
| Getting Thirsty | Find a hidden area | Hit Spirits Landing's vending machine several times |
| Something’s fishy... | Defeat Sky Pirates | Evasion battle with the unarmed ship |
| Strengthened Sword | Upgrade Sword Strength | Check the shop-purchase condition |
| Pins in the Map | Buy Map Markers | 100 credits |
| Tour Trouble | Defeat Tomb of 1000 Spirits | Tomb Ruins→Slam |
| Pretty Tough! | 10 upgrades | Check island collection counts |
| Ticking Timebomb | Defeat ClockMaker | Reach the ClockWorks core |
| 9 Lives and 8 Knives | Defeat Buried Beast | Reach the Spirits Landing core |
| Feeling Stronger | Health upgrade | Check the shop-purchase condition |
| A Better Bucket | Upgrade the ship for the first time | Bring two Gear to the ship shop |
| A Sky Tail | Defeat MechaRat | Northwestern air route→Wolfpine |
| Coming to Grips | Defeat GrappleBot | Southwestern air route→Eastwright |
| Grave Danger | Defeat Forgotten Grave | Rainy Plains |
| Shrine Bright | Buy Shrine Shifter | 900 credits |
| Tulip Tussle | Defeat Runaway Plant | Hanging Gardens→Shift Arrows |
| Halfway There | 30 upgrades | Collection midpoint |
| Stone Cold Witch | Defeat Stone Witch | Forgotten Rots→Propeller |
| A Swampy Situation | Defeat Swamp Frog | Rainy Plains→Cloud Arrows |
| Paying Your Dues | Open five paid Gates | Prepare 100 credits for each |
| Loving the Rain | Two Rainy Plains hiding places | Near the port and the rainy northeastern area |
| Top of the Line | Upgrade the ship again | Three Gear and Propeller |
| Exterminator | Defeat Defender Unit | Second ship upgrade→southeastern air route |
| Robot Rampage | Defeat Rogue Bot | The Pits→Charge Attack |
| Strongest Sword | Sword Strength10 | Increase through shops or upgrade cards |
| Boney Battle | Defeat BoneGolem | Remove the seal |
| Burning Bridges | Defeat FilthPest | Use Cloud Arrows |
| Behind the Mask | Defeat GutGhoul | Main story's final battle |
| All Mapped Out | Buy Upgrade Markers | 2500 credits |
| Sharper Arrows | Upgrade Arrow Strength | Check the shop-purchase condition |
| X Marks the Spot | Complete Scavenger Hunt | Letter card→visit three locations |
| Can’t Touch This | Defeat a boss at full health | Aim for an undamaged victory |
| Fully Equipped | 60 upgrades | Compare counts across all islands |
| The Mystery Beyond | Open Final Gate | Head to Cinder after story completion and 60 upgrades |
| Back to Life | Reverse Stone Witch's curse | Choose the Forgotten Rots event card |
| Turning a New Leaf | Visit Snoot's shop | Check the invitation letter and shop state |
| An Old Friend | Visit Forgotten Grave's spirit | GreyBird's letter→northeast Spirits Landing |
| Sharpest Arrows | Arrow Strength10 | Increase through shops or upgrade cards |
| The Pits | Fall into Deadly Pit | Use Shift Arrows in the Tomb boss room |
| All in a Row | Complete Boss Rush | After unlocking, select it from the main menu |
| The Toughest Warrior | Complete Boss Rush on Hard | Difficulty condition, separate from zero deaths |
| Make it out Alive | Complete Boss Rush with zero deaths | Practice difficult bosses first |
Check card and letter achievements
For Back to Life and X Marks the Spot, activate the event through a card before visiting the location. For Snoot and GreyBird, check Post Box letters after progression.
Having 60 upgrades alone does not establish event completion. Compare activation, letters and visits in quests.
Distinguish shop purchases from Strength 10
For Strengthened Sword, Sharper Arrows and Feeling Stronger, check shop purchases. For Strongest Sword and Sharpest Arrows reaching 10, increase the value through shops or upgrade cards.
Even achievements involving the same sword or arrow upgrade distinguish the first purchase from reaching 10. Check purchase history and current value 10 separately.
Practice Boss Rush's three achievements separately
The three conditions are normal completion, Hard completion and zero deaths. Do not merge Hard and zero deaths into a requirement to achieve both in a single attempt.
This mode does not carry over every main-story upgrade; it uses predetermined upgrades after each boss. A main-story sword at 10 alone does not guarantee Boss Rush damage.
- Advance the story and 60 upgrades, then unlock it through Final Gate.
- Choose Boss Rush from the main menu.
- Learn attacks and upgrade choices through normal completion.
- Aim for Hard completion and check zero deaths in a separate attempt too.
Do not damage the original save while checking achievements
Instead of treating save replacement or force-quitting as standard steps, use normal in-game menus to check difficulty and mode. For a locked achievement, first inspect the relevant card, purchase or visit.
Even when pursuing all achievements on one save, read required event-card choices. No hands-on guarantee is made that every platform has no permanent missables.
Frequently asked questions (FAQ)
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