ENDGAME SPOILER WARNING!!!
Three-Eyed (in-game name Kolmisilmä) is a large spider-like creature found in The Laboratory, and serves as the final boss of the game.
Behavior & Combat
Upon entering Kolmisilmä's arena, it is first seen with its legs curled up near the Sampo. If it is approached, Kolmisilmä extends all of its legs, and becomes hostile once the Noita grabs the Sampo. Kolmisilmä attacks with various projectiles that fire off more projectiles in a cross pattern, fly in a downwards arc and cause an upwards jet of flame, fly shortly and summon a ball of lava in its place, and wobble outwards in a pattern similar to the Slithering Path projectile modifier. It will also occasionally summon a large Circle of Stillness around itself to freeze the player if they get too close. Kolmisilmä also uses its legs in a similar fashion to the Lukkit, using them to crawl around the arena and attempt to avoid the player's spells. It also sometimes summons Kolmisilmän apurit minions: flying skulls which occasionally fire projectiles at the player.
When the Player defeats Kolmisilmä, its limbs and body will split apart and fall down, and a glowing red portal to The Work (End) will spawn.
Kolmisilmä will not stop pursuing the player, no matter how far they go, it will keep going. This oversized Lukki will pursue all the way to the Moon and back.