Here is the full list of all 11 Reagan Gorbachev achievements.
Complete a level.
Complete any level without setting off any alarms.
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 3 trivia questions correctly.
Answer 10 trivia questions correctly.
Answer 20 trivia questions correctly.
Destroy all the fuel in the fuel depot. (Level 21)