Here is the full list of all 40 METALLIC CHILD achievements.
Go on camera 20 times, for Miamo's live stream.
Deal 600 damage or more to an enemy in a single hit.
Defeat the Metallic Child, Graver.
Defeat the Metallic Child, Faceless.
Clear Terminal Creed.
Defeat the Metallic Child, Flyer.
Defeat 20 of Catherine's modified robots.
Open Daviny's box 20 times.
Defeat the Metallic Child, Icela.
Defeat the Metallic Child, Lighton.
Accomplish 30 combos.
Defeat the Metallic Child, Spyden.
Defeat the Metallic Child, Controd.
Accomplish = double kills.
Defeat the Metallic Child, Shutty.
Be graded an S for battle 100 times.
Help retrieve Sly's weapons 20 times.
Defeat the Metallic Child, Gigantic.
Install 150 Mini-cores.
Visit the various facilities of Life Stream.
Rescue 20 survivors.
Defeat the Metallic Child, Fira.
Experience a defeat in battle.
Defeat all Metallic Childs.
Defeat the Metallic Child, Magna.
Install 200 bugged and viral Cores.
Install 150 Super-cores.
Clear all Virtual Missions.
Defeat 3000 enemies.
Accomplish 100 triple kills.
Accomplish 30 fantastic kills.
Perform 200 Chain-skill attacks.
Help deliver Trevon's virus case 20 times.
Repair Schrodinger 20 times.
Be graded a D for battle 100 times.
Collect all Recor-Ds.
Collect all Fan-art.
Change weapons 100 times during battle.
Equip a drone 100 times during battle.
Perform 200 Take-downs.