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