Here is the full list of all 11 Reagan Gorbachev achievements.
Answer 3 trivia questions correctly.
Complete any level without setting off any alarms.
Complete a level.
Discover a secret room.
Finish a level without killing any enemies.
Kill 20 or more enemies on any level.
Complete any level in less than 20 seconds.
Complete the game. (32 levels)
Answer 10 trivia questions correctly.
Answer 20 trivia questions correctly.
Destroy all the fuel in the fuel depot. (Level 21)