Tentakeel Outpost is the first sector of Hero Mode in Splatoon 2. The area is immediately accessed after following Marie into the sewer from Inkopolis Square. The sector contains three stages and one boss fight. One Sardinium and one Sunken Scroll can also be found in this hub world.
Stages[]
There are three stages and one boss fight that can be found in Tentakeel Outpost.
Return of the Octarians[]
The entrance to this stage is found beyond the locked boss pad.
Welcome to Octopia[]
The entrance to this stage is found in the left corner of the map. Use Squid Form to proceed through the gate.
Sunset Octocopter[]
The entrance to this stage is found to the right along a small path that leads to a narrow platform.
Industrial Toast[]
The entrance to this stage is found in the center of the hub world. Requires three Zapfish to proceed.
Sardinium[]
Near the entrance to Stage 2, look for a wall that can be scaled. Jump across the platform and ride up the next wall and you'll find the Sardinium within an orange crate.
Sunken Scrolls[]
Near the boss entrance, look for the yellow balloon. Shooting this balloon will trigger another balloon to appear in a new location. Pop all the balloons within the time limit to reveal a Sunken Scroll in the last balloon. Taking too long will result in the balloon flying upwards into the sky, resetting your progress.