Here is the full list of all 26 Electronauts achievements.
Throw an audio grenade when you transition backing tracks.
Sequence all notes on all possible sequencers on every instrument
Mute the kick/snare stems in a backing track and then bring them back in
Use the arrangement equipment
Have a sequence playing on every instrument in a room
Jam in a single room for 15 mins or more
Fill 4 rows on the arrangement equipment
Played multiplayer
Play a song in each visualizer at least once
Play an instrument consistently for 1 min
Use the remix beat repeat 25 times
Throw the audio grenades at your fellow electronaut
Have complete silence for 4 minutes and 33 second
Have delay enabled on all instruments and hold down the filter in FX cube for 2 loops.
Play only the pad synth for 2 full loops with all backing tracks muted
Play 2 orb kits simultaneously for 2 full loops
Use the vocal equipment whilst recording a sequence on an instrument.
Play only the synth ball for 4 full loops
Clear 3 sequences in succession
Mute 2 sequences at the end of a loop
Play nothing but the harp for 2 whole loops.
Record a sequence on an instrument, mute it for a loop and play that instrument with your sticks for a loop then unmute it.
Play every note on the synth ball in ascending order
Play 20 different songs
Play every instrument type in the game
Throw a grenade and use the beat repeat to studder the grenade.