Here is the full list of all 21 RICO achievements.
Complete a case
Survive five waves in lockdown mode
Complete a daily training session
Knock off 50 masks
Get one thousand kills
Neutralise three or more criminals with one stinger in the same room
Revive yourself five times
Get twenty melee kills
Get five hundred kills
Finish three operations losing less than ten health
Clear a room while in slow-mo ten times
Complete a daily operation
Get one hundred kills
Knock down a criminal sliding into a room
Complete a two-player operation
Revive another player five times
Survive ten waves in lockdown mode
Reach level 14
Complete a case on Hard difficulty
Get a kill with a side arm, tactical weapon, and a grenade in the same room
Purchase all the weapons