Here is the full list of all 14 Supaplex achievements.
Complete the last level.
Complete all levels.
Complete 100 levels.
Complete 80 levels.
Complete 60 levels.
"Eat away" 50 tiles whith bugs.
Complete 40 levels.
Complete 20 levels.
"Eat away" the bug.
"Eat away" activate the terminal.
Go through 100 ports.
"Eat away" 50 infotrons.
Move 100 zonks.
Complete all 5 training levels.