Accessing the first level is a rather straightforward process, as the player has to simply walk down the corridors until their path is blocked by Fuzzy Ooze. Then they simply have to look to the right and will find the kettle.
Walkthrough
Checkpoint 1
The level starts with the player going through a field filled with Crates and Balloons. It is followed by a Launchpad which directly leads to the next checkpoint.
Final Checkpoint
The second section begins with a Balloon Fish in front of multiple crates stacked on top of each other, acting as a wall.
After popping the Balloon Fish, the player is given the choice to go on one of three paths.
The path ahead leads to the goal, while the ones on the left and right lead to more Power Eggs. Yet again, to gain access to these paths, the player can pop more Balloon Fish to break the crates blocking the paths.
On all three paths, the player has to make use of Splat-Switches to go onward.
Additionally, the paths leading to Power Eggs contain crates which can only be broken by throwing Smallfry at them.
If the player ventures forth they will eventually cross paths with an Octotrooper. The player is given the choice to either sneak up behind walls or fight head-on.
After defeating the enemy and activating another Splat-Switch, a bridge will allow the player to rescue the Zapfish and finish the stage.