Here is the full list of all 20 Red Matter achievements.
Complete your mission
Send the Documents
Scan the Volgravian Communication Protocols datadrive
Find and scan the secret documents
Scan the Quantum Physics Datadrive
Access the Quantum Lab
Find Nikolai's secret room
Play the mysterious videotape
Scan the Habitat Datadrive
Scan the Security Datadrive
Access the Vault
Restore the power
Scan the Power Station Datadrive
Find a way into the underground complex
Scan the first Red King painting
Scan the Evacuation Protocol Datadrive
Scan the Basic Volgravian Datadrive
Scan the second Red King painting
Scan the third Red King painting
Find the special Datadrive