Here is the full list of all 21 Bohrdom achievements.
Maintain control through 7 scary minutes
Successfully control 5+ parallel atoms in one quantum round
Permit no escape from Magnesium (timed singleplayer modes only)
Split an atom thus causing more split atoms...
Use the main menu as a screensaver
Escape from 5+ parallel atoms in one quantum round
Drop from max energy to zero in 1.5 seconds by nuclear action
Drain an electron from max energy to zero in 1.5 seconds
Escape an atom in less than five seconds
Maintain lightspeed for 60 consecutive seconds
Drain 1000 energy units by faster-than-light methods
Lose control of an atom within a round's first five seconds
Complete every campaign atom as electron
Complete every campaign atom as nucleus
Absorb over 9000 energy units
Dodge 5000 Dark Photons
Fire 5000 successful Dark Photons
Deny exit to 1000 electrons
Complete both paths in one campaign run
As electron, beat 5+ levels in one campaign without escaping
Get all visible achievements