Here is the full list of all 179 DESYNC achievements.
Complete User Integration
Discovered all Priority Styles
Progressed Stability Imbue Insertion
Progressed Dull Imbue Insertion
Discovered all Offence Styles
Petrified 50 Enemies
Cleared Meridian Aberration
Cleared Helix Aberration
Maximised Firerate Increase
Progressed Firerate Shard Tier
Executed the Joust Attack Sequence
Cleared Troglobionic Aberration
Cleared Stridulitron Aberration
Cleared Zenith Aberration
Executed the Consumed Attack Sequence
Progressed Toxburst Sidearm Level
Executed the Processor Attack Sequence
Froze 50 Enemies
Executed the Aperture Attack Sequence
Executed the Aerial Attack Sequence
Executed the Decimator Attack Sequence
Executed the Plague Attack Sequence
Executed the Bounced Attack Sequence
Executed the Amplitude Attack Sequence
Executed the Slingshot Attack Sequence
Executed the Sculptor Attack Sequence
Executed the Osmosis Attack Sequence
Discovered all Manoeuvre Styles
Executed the Staked Attack Sequence
Melted 50 Shards
Toxified 50 Enemies
Progressed Velocity Imbue Insertion
Cleared a level with S+
Desynced every enemy in a level
Executed the Deliverance Attack Sequence
Generated 50 Shards
Maximised Damage Increase
Executed the Basher Attack Sequence
Progressed Strength Imbue Insertion
Executed the Fragment Attack Sequence
Executed the Chemist Attack Sequence
Used the Pulsar to Desync Ypsiliform
Maximised Retention Increase
Progressed Aegis Sidearm Level
Used the Aegis and Parried Xeoron
Executed the Refusal Attack Sequence
Maximised Speed Increase
Executed the Divider Attack Sequence
Progressed Pulsar Sidearm Level
Executed the Pull Apart Attack Sequence
Cleared Biomineral Aberration
Executed the Antisocial Attack Sequence
Executed the Abyssal Attack Sequence
Gained a total score of 10,101,101
Cleared Colossal Aberration
Overkilled 500 Enemies
Executed the Dismayer Attack Sequence
Killed 1000 Enemies
Launched 100 Enemies
Discovered the Stability Imbue
Progressed Speed Shard Tier
Cleared Approach Aberration
Desynced 100 Enemies
Maintained Desync Time for over 15 seconds
Maxed out the Desync Stream
Maxed out every Stream at once
Defeated Xeoron without taking damage
Cleared a level with perfect accuracy
Executed the Riposte Attack Sequence
Executed the Entripment Attack Sequence
Defeated Ypsiliform without taking damage
Defeated Zentore without taking damage
Defeated Zentore Swiftly
Defeated Xeoron Swiftly
Combined all Zone Structs
Defeated Ypsiliform the Defenders
Defeated Ypsiliform swiftly
Cleared Zenith
Discovered the Virus Core
Executed 1000 Attack Sequences
Progressed Damage Shard Tier
Progressed Coldcross Sidearm Level
Executed the Cooldown Attack Sequence
Executed the Fusillade Attack Sequence
Progressed Retention Shard Tier
Initialize all Osmoflux Shard Slots
Cleared Troglobionic
Discovered the Osmoflux Weapon
Discovered the Pulsar Sidearm
Discovered the Reform Core
Initialize all Diffuserrail Shard Slots
Cleared Stridulitron
Discovered the Freeze Core
Executed the Extent Attack Sequence
Executed the Penetrator Attack Sequence
Discovered the Diffuserrail Weapon
Executed the Acidic Attack Sequence
Executed the Dismantler Attack Sequence
Initialize all Wavescythe Shard Slots
Defeated Zentore the Defender
Deny Zentore from healing over 33% of it's health
Cleared Meridian
Discovered the Fracture Core
Executed the Stimulator Attack Sequence
Discovered the Wavescythe Weapon
Initialize all Polyhedrom Shard Slots
Cleared Helix
Discovered the Dull Imbue
Executed the Deliquesce Attack Sequence
Discovered the Toxburst Sidearm
Executed the Unseen Attack Sequence
Executed the Lanced Attack Sequence
Discovered the Corruptor Core
Executed the Aggressor Attack Sequence
Cleared Biomineral
Discovered the Nutation Core
Executed the Drilled Attack Sequence
Discovered the Polyhedrom Weapon
Executed the Delayer Attack Sequence
Initialize all TerraBlaster Shard Slots
Initialize all Diameteor Shard Slots
Defeated Xeoron the Defender
Executed the Shocker Attack Sequence
Executed the Nether Attack Sequence
Executed the Axed Attack Sequence
Executed the Overcharged Attack Sequence
Cleared Necropolis Aberration
Maxed out the Attack Sequence Stream
Maxed out the Overkill Stream
Executed the Energizer Attack Sequence
Executed the Coolant Attack Sequence
Executed the Ambidextrous Attack Sequence
Initialize all Tristol Shard Slots
Cleared Colossal
The true DESYNC starts here
Discovered the Velocity Imbue
Executed the Justicar Attack Sequence
Discovered the Distortion Core
Executed the Alternator Attack Sequence
Discovered the Coldcross Sidearm
Executed the Cored Attack Sequence
Executed the Xaero Attack Sequence
Executed the Augur Attack Sequence
Executed the Candescence Attack Sequence
Executed the Singleton Attack Sequence
Discovered the Diameteor Weapon
Cleared Approach
Discovered the Strength Imbue
Discovered the Additive Core
Blasted 100 Enemies
Executed the Evader Attack Sequence
Discovered the Aegis Sidearm
Cleared Necropolis
Maxed out the Kill Stream
Discovered the Restore Core
Executed the Switcher Attack Sequence
Executed the Entrapment Attack Sequence
Executed the Oblitherator Attack Sequence
Executed the Mercy Attack Sequence
Executed the Pierced Attack Sequence
Discovered the Terrablaster Weapon
Executed the Flicker Attack Sequence
Executed the Multiplex Attack Sequence