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