Here is the full list of all 25 Bzzzt achievements.
The base game contains 21 achievements, and there is 1 DLC pack containing 4 achievements.
Finish the first stage.
Collect 100 spare parts.
Finish the first boss fight.
Die one hundred times.
Perform a golden flawless run in 10 stages.
Beat a trophy time in ten stages.
Collect all spare parts and beat a trophy time in a stage simultaneously.
Perform silver or golden flawless run in all story mode stages.
Use Quick Restart 200 times.
Finish the game.
Finish the game on normal difficulty.
Finish the game on insane difficulty.
Collect all spare parts in all story mode stages.
Perform a golden flawless run in all story mode stages.
Perform a golden flawless run in 30 stages.
Watch Emily's sequence till the end.
Finish any stage in under 1.5 seconds.
Finish the second boss fight.
Finish the third boss fight.
Open Leaderboards.
Finish any stage with minimal score.