Here is the full list of all 25 B.U.G. Force achievements.
Level one boss terminated - HARD
Level two boss terminated - HARD
Level three boss terminated - HARD
Training course completed
Game completed on level - HARD
All telepads conquered on EASY level
All telepads conquered on level - MEDIUM
All telepads conquered on level - HARD
Game completed on level - EASY
Game completed on level - MEDIUM
Level one boss terminated - MEDIUM
Level two boss terminated - MEDIUM
Level three boss terminated - MEDIUM
Level one boss terminated - EASY
Level two boss terminated - EASY
Level three boss terminated - EASY
Level six boss terminated - EASY
Level six boss terminated - MEDIUM
Level six boss terminated - HARD
Level four boss terminated - EASY
Level four boss terminated - MEDIUM
Level four boss terminated - HARD
Level five boss terminated - EASY
Level five boss terminated - MEDIUM
Level five boss terminated - HARD