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 game on normal difficulty.
Finish the game on insane difficulty.
Die one hundred times.
Finish any stage with minimal score.
Finish any stage in under 1.5 seconds.
Perform silver or golden flawless run in all story mode stages.
Perform a golden flawless run in all story mode stages.
Finish the game.
Collect all spare parts in all story mode stages.
Finish the third boss fight.
Open Leaderboards.
Perform a golden flawless run in 30 stages.
Use Quick Restart 200 times.
Finish the second boss fight.
Watch Emily's sequence till the end.
Finish the first boss fight.
Beat a trophy time in ten stages.
Perform a golden flawless run in 10 stages.
Collect 100 spare parts.
Collect all spare parts and beat a trophy time in a stage simultaneously.
Finish the first stage.