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