Here is the full list of all 51 Protocol achievements.
Started the fire.
Got ending 7.
Took a shortcut in the chapter "You have violated the Protocol".
No violations during the game.
Use all the drugs in the complex.
Found all dead ends in the Technical area.
Fetched the hand in ending 3.
Administrated the "dubious" drug again.
Defeated a drone projecting AI many times.
"Called" a combat drone.
Got ending 2.
Found all the possible ways to violate the Protocol.
Passed chapter "Penetration" without damage.
Defeated the third "boss" without damage.
Found all the hidden Easter eggs during the "system configuration".
Found a screamer in chapter "Penetration".
Died during the training.
Passed hacker's first mini-game.
Find a way to go into the far future.
Interrogated the alien using a teapot.
Vaccinated the alien.
Threw soap at the alien when you first met it.
Throw any object back at the alien.
Entered the iconic password in the first terminal.
Threw any object except a snowball.
Used a hint 100 times.
Used a hint 50 times.
Rolled down a hill.
Death from suffocation.
Death from the fire.
Got ending 0.
Got ending 3.
Got ending 5.
Got ending 6.
Learned RAT-DG terminal's functionality.
Got ending 4.
Destroyed the complex.
Guessed the correct password from the Residential unit's door.
Used the terminal's "chat".
Complied with Wilson's request.
Defeated the second "boss" without damage.
Defeated the first "boss" without damage.
Saw the scene after the credits.
Got ending 1.
Ignored contactees' warning.
Used a hint 10 times.
Forgot a keycard in the lighting terminal.
Violated the Protocol for the first time.
Threw a snowball.
Forgot to take a keycard in the capsule.
Used a hint for the first time.