Accessing the third level is unsurprisingly another straightfoward process, as the player has to continue walking down the corridors yet again until their path is blocked by more Fuzzy Ooze. On their left, they will see the kettle.
The level starts off with the player being confronted with a bunch of Crates. Among them is a vault to which the responding key is just ahead, hidden inside a crate.
After unlocking the vault, the player can use an Inkrail to progress to the next checkpoint.
The final section begins with the player given the choice between 3 paths. For the path in the middle the player has to activate a Splat-Switch, but then will see that to progress further they need to get past two more vaults. On the left there is another inkrail, leading to a small portion where two Octocopters will try to shoot at the player. A vault will be surrounded by grates. When the player finds the key, they can unlock the vault revealing yet another inkrail. While that inkrail will lead back to where the section started, it will be essential to progress further soon enough.
Afterwards the player should progress to the right path, where the player has to throw Smallfry towards another inkrail in order to activate it. Then they will be required to activate once more an inkrail leading up a small tower, on top there is a crate holding a key and yet again an inkrail, however this time the player will realize that they cannot reach it from there, they can merely activate it.
After returning back to the main section, they will see that they can use the inkrail to jump on top of the other and reach a new area, hiding the last key required.
After unlocking the two vaults, they will have to activate the last inkrail of the level and ride towards the Zapfish, finishing the level.
