AI Limit has a total of 7 Main Seals and 44 Normal Seals to collect for the Tattooist trophy & achievement. Main Seals are obtained by interacting with NPCs, defeating one boss, and finding a final one in a chest. Normal Seals are obtained by finding them in the environment as pickups through the game. Main Seals can be missed if you don’t interact with some NPCs, but these are all obtained from the initial interactions so they are hard to miss unless you completely ignore the NPCs for the entire playthrough. Normal Seals can be collected at any time until the end of the game.
Obtaining all Main Seals and “enough” Normal Seals is required for the trophy/achievement 
Tattooist – obtain all Main Seals and enough Normal Seals.
Note: it’s not currently known what number “enough” Normal Seals is, but if you are collecting all possible Normal Seals as you progress you will earn the trophy/achievement when you pick up the final Main Seal, where you will have obtained a total of 37 out of 44 Normal Seals.
To change/upgrade seals you must first obtain the key item Seal Needle which is located just before Outer-Wall Ruins – Slums > Abandoned Houses Branch, by going to the opposite side of the ladders leading up to the Branch.
Main Seals
Main Seal #1: Seal of the Newborn
Default Main Seal that you have at the start of the game.
Main Seal #2: Seal of Pilgrim
Branch: Outer-Wall Ruins – Slums > Temporary Campsite
Given to you by Shirley when you speak with her at her first location in the Temporary Campsite.
Main Seal #3: Standard Seal of Bladers
Branch: Sunken City Overground – Rooftop Street > Lounge
Given to you by Feylia when you speak with her at her first location near the lounge.
Main Seal #4: Seal of Investigator
Branch: Sunken City Overground – Flooded Street > High Street
Purchased from Millaire for 7 Adaptive Fragments + 4000 Crystals. Near above Branch is the first time you can encounter her, but she will have this in her inventory the entire game and she can be found permanently at the Temporary Campsite after defeating the Hunter of Bladers main story boss.
Main Seal #5: Seal of Executor
Branch: Sunken City Underground – Underground Parish > Parish Station
Obtained automatically after defeating the Necro, the Wanderer of Undersea boss.
To reach the boss, from the Branch room go onto the left balcony where the enemy is standing. Directly left of it are some platforms you can drop down, leading to a lower level. Follow the path up the stairs to find the boss.
Main Seal #6: Seal of the Tree
Branch: Sewer Town – Center > Gate of the Tree
Interact with the Memory beside the Branch to obtain the Seal.
Main Seal #7: Seal of Clergies
Branch: Hagios Patir – Upper Level > Faultage Corridor
From the Branch follow the main path and go past the room with the red hammer enemy and then left into a side hallway at the top of the stairs. Follow this around to the upper floor where the two ranged enemies are. Go around the back of the pillar in the middle and open the box to obtain this seal.
Normal Seals
- Breath of Life
- Tide of Life
- Torrent of Life
- Metastability
- Stability
- Hyperstability
- Sand Accumulator
- Stone Builder
- Gold Hoarder
- Hardened Skin
- Steel Sheel
- Divine Guardian
- Drizzle
- Quagmire
- Submerged Coffin
- Inertia Transformation
- Neutral Transformation
- Insulation Transformation
- Brief Polymerization
- Precipitation
- Jade Form
- Emerald Form
- Moon Dew
- Moon Radiance
- Cleansing Therapy
- Harsh Voice
- Ethereal Tone
- Deadwood Form
- Monolith Form
- Burst
- Collapse
- Slayer
- Tyrant
- Ingestion
- Gluttony
- Conversion
- Deviation
- Variation
- Scattered Stars
- Everlasting Piercing
- Fortified Shield
- Thunder Mastery
- Gush
- Nova
