Full list of all 30 Operation: Tango achievements. It takes around 5-6 hours to unlock all of the achievements in the base game on Windows.
The base game contains 24 achievements, and there is 1 DLC pack containing 6 achievements.
Complete all other Achievements
Complete Big-Bang Theory as an agent
Complete all missions as an agent
Complete all missions with both characters
Locate the bomb as an agent
Complete Institutional Cleanup as an agent
Use all emotes as an agent
Complete Digital Dive as an agent
Kill your partner as an agent
Find Clever Plays on the world map
Complete Business on the Go as an agent
Complete A High-Tech Target as an agent
Complete A Viral Heist as an agent
Complete Big-Bang Theory as a hacker
Complete all missions as a hacker
Locate the bomb as a hacker
Complete Institutional Cleanup as a hacker
Complete Digital Dive as a hacker
Complete Business on the Go as a hacker
Send three messages to your partner as a hacker
Complete A High-Tech Target as a hacker
Request a Hint
Complete A Viral Heist as a hacker
Kill your partner as a hacker
Complete all challenges as an Agent
Complete all challenges with both characters
Earn a gold medal in all challenges
Complete all challenges as a Hacker
Earn a bronze medal or better in all challenges
Earn a silver medal or better in all challenges