Splatoon 3 – Get To Know Alterna, Your Only Choice Mission Walkthrough

Defeating the Octobot King in The Crater will properly kick off the story of Splatoon 3, moving away from the Splatlands and opening up the underground world of Alterna. Here, Splatoon 3’s missions really start to develop in complexity, adding new enemies and challenges. 

We’ll walk you through Alterna’s introductory mission and make sure you’re as prepared as possible to explore this strange new world. 

READ MORE: Splatoon 3 Abilities Tier List 

Splatoon 3: Get To Know Alterna, Your Only Choice – The First Key 

You’ll begin Get To Know Alterna, Your Only Choice by selecting your loadout for the first time in Splatoon 3. This extra level of customization gives you the freedom to tackle Splatoon 3’s missions your own way.  

With a loadout selected, proceed through the security gate to be launched into the mission proper. Grind down the ride rail and pop the balloons with your selected weapons to gain Power Eggs and jump through the rings situated just above the rail to gain more.  

Drop down to the platform ahead of you to begin your search for the level’s 3 keys. Shoot the mobile paint-roller to have it careen down the thin platform to your right, smashing crates and colliding with a sponge block. The block will absorb all of the roller’s ink and grow in size, allowing you to swim up it as a platform. 

After climbing the sponge block, activate the dual ride rails and hop between the rings to gain more Power Eggs. Shoot the unfurling platforms beyond to climb up and proceed. Grab the nearby can to equip a Trizooka and blast away the stationary Octarians. Re-equip the Trizooka from the can once the Octarians are gone and shoot the furled-up platform. Quickly swim across once it unfurls and grab your first key before dropping back down to the central area. 

Splatoon 3: Get To Know Alterna, Your Only Choice: The Second Key 

Head across to the left side of the area and bypass the Squee-G that is cleaning up all the ink. Shoot the drum target to cause blocks to slide out of the wall, cover them in ink and swim up. 

At the top of the block, burst the balloon and ink up the nearby wall. You’ll need to be quick to create a path to swim up before the Squee-G erases it. Once you reach the top, claim the second key and drop back through the rings to the central area. 

The Third Key 

Move back past the Squee-G and over to the red valve protruding from the ground. Shooting the valve will cause a massive geyser of ink to temporarily burst forth. Ride the geyser to reach the platform above. 

Once on the mid-air platform, hurl Smallfry across at the Inkrail, then ride the up the steps. Ink the fan to have it propel your platform forward to the third key. Drop back to the middle area for the final time and head over to the stairs that are blocked by three vaults. 

Unlock each vault in turn, then jump, swim and ride your way to the top of the stairs. Once there, you’ll have completed your first Alterna mission in Splatoon 3.