Here is the full list of all 53 CONVERGENCE: A League of Legends Story achievements.
Defeat Future Ekko in the Clocktower.
Defeat Syntixi Zarkon.
Craft 10 Gadgets at the Workbench.
Find and open every chest in the Entresol.
Learn 11 Skills from Rungs.
Defeat Jinx.
Use Parallel Convergence to simultaneously slow down 5 projectiles.
Find and open every chest in the Inx Theater.
Return 6 Clockwork Champions to Corin.
Defeat Future Ekko on the Chaincrawler.
Find and open every chest on the Chaincrawler.
Defeat Drake and Vale.
Unlock 10 Chromas and Z-Trails at Elie's Shop.
Defeat Camille.
Grind for a total of 180 seconds.
Complete the Lacuna.
Choose to give Syron to Inna.
Fight The Watcher.
Defeat Warwick.
Catch 4 Scrambots.
Use Phase Dive to go through a Chempunk Smasher's energy barrier attack.
Defeat Drake.
Parry an attack from a Boss.
Learn 5 Skills from Rungs.
Defeat Zarkon Poingdestre.
Parry enemy attacks a total of 50 times.
Defeat 3 enemies with a single Timewinder throw.
Get hit by an attack, Rewind, then Parry that same attack.
Defeat Future Ekko in the Courtyard.
Defeat 3 enemies with a single Chronobreak.
Recover 30 health by rewinding damage taken.
Temporal Pulse an enemy into Parallel Convergence, then Phase Dive them.
Find and open all chests in the game.
Return 12 Clockwork Champions to Corin.
Choose to give Clovemary to Inna.
Unlock 20 Chromas and Z-Trails at Elie's Shop.
Find and open every chest in the Cultivair.
Look at the family portrait up close in Ekko's family apartment.
Find and open every chest in Factorywood.
Find and open every chest in the Fairgrounds.
Craft all Gadgets at the Workbench.
Choose to give Hexlock to Inna.
Wear the Inx Chroma in the Inx Theater.
Explore the entire Map.
Complete the Sump Sewers without defeating a single Bat, Grub, or Canker.
Complete the game without dying.
Defeat Future Ekko in the Clocktower with no gadgets equipped.
Defeat Camille without using Rewind.
Return 8 Scrambot artifacts to Aximander.
Complete the game in under 6 hours.
Find and open every chest in the Sump Sewers.
Defeat a total of 20 enemies with Temporal Pulse.
Don't ever fight the Watcher in the Lacuna.