Splatoon Octo Valley stages and bosses
Follow the five campaign areas and read each boss’s main opening.
Edition covered
Original 2015 Wii U Splatoon. Official online play ended in April 2024; Hero Mode and local Battle Dojo remain offline features. Multiplayer weapons and modes are described as an original-game reference. Salmon Run, dualies and later-game movement abilities are outside this edition.
Clear stage kettles to open the area boss
Ink the entrances to reveal them, rescue the stage Zapfish and return to the hub. The first area has three regular stages; each remaining area has six.
| Area | Regular stages | Boss encounter |
|---|---|---|
| Area 1 | 1–3 | The Mighty Octostomp! |
| Area 2 | 4–9 | The Dreaded Octonozzle! |
| Area 3 | 10–15 | The Rampaging Octowhirl! |
| Area 4 | 16–21 | The Ravenous Octomaw! |
| Area 5 | 22–27 | Enter the Octobot King! |
Bosses test an ink mechanic
Look for a vulnerable surface, a returnable projectile or a timing window. Repeating ordinary shots into armor rarely solves the encounter.
| Boss | Main opening | Response |
|---|---|---|
| Octostomp | Falls flat after its attack | Ink and climb its exposed surface |
| Octonozzle | Inkable body sections | Work upward toward its weak point |
| Octowhirl | Its rolling attack can be stopped | Use your ink to create an opening |
| Octomaw | Opens its mouth after the tooth attack | Throw a bomb inside |
| Octobot King | Returnable fists and projectiles | Send attacks back and keep moving |
Revisit a stage for its hidden scroll
Finishing a stage and finding its Sunken Scroll are separate tasks. Replays let you search for the collectible without treating every first clear as a perfect run.
Spend eggs when a fight stalls
Campaign upgrades improve tools used throughout Hero Mode. If a boss repeatedly catches you while refilling, review the ink-tank upgrade and practice a safe retreat route.
References
| Reference | Website |
|---|---|
| Nintendo original Splatoon manual | www.nintendo.com |
| Nintendo: local Battle Dojo setup | en-americas-support.nintendo.com |
| Nintendo: Wii U online-service status | en-americas-support.nintendo.com |
| Original Splatoon game reference | splatoonwiki.org |
| Detailed topic reference | splatoonwiki.org |