Here is the full list of all 76 Duet achievements.
The base game contains 66 achievements, and there is 1 DLC pack containing 10 achievements.
Beat all of "intimacy" without hitting a wall.
Beat all of "identity" without hitting a wall.
Beat "continuance" wave 100.
Beat "continuance" wave 10.
Beat all of "initiative" without hitting a wall.
Beat all of "ambition" without hitting a wall.
Beat all of "anticipation" without hitting a wall.
Beat all of "control" without hitting a wall.
Beat all of "understanding" without hitting a wall.
Beat all of "trust" without hitting a wall.
Beat all of "revolution" without hitting a wall.
Beat all of "acceptance" without hitting a wall.
Beat all of "hope" without hitting a wall.
Beat "release".
Beat "perspective".
Beat "tension".
Beat "ambition".
Beat "integrity".
Beat "anticipation".
Beat "transcendence".
Beat all of "depression" without hitting a wall.
Beat all of "guilt" without hitting a wall.
Beat seven daily challenges in a row.
Beat all of "bargaining" without hitting a wall.
Beat "resilience".
Beat "quickening".
Beat "revolution".
Beat five advanced daily challenges.
Beat ten daily challenges.
Beat three daily challenges in a row.
Earn at least 1500 in infinite mode.
Get at least 750 in infinite mode.
Beat all of "anger" without hitting a wall.
Beat all of "denial" without hitting a wall.
Beat all of "ignorance" without hitting a wall.
Beat "intimacy".
Beat "initiative".
Beat "identity".
Beat "control".
Beat "understanding".
Beat "trust".
Beat the game and watch the end sequence credits to the end.
Beat "acceptance".
Successfully navigate invisible blocks.
Beat "hope".
Beat "depression".
Beat "guilt".
Get at least 250 in infinite mode.
Try the infinite mode.
Beat "bargaining".
Beat one daily challenge.
Beat "anger".
Beat "denial".
Successfully spin around a rotating block.
Fail 10 times in a wave before completing it.
Beat "ignorance".
Beat the first wave.
Beat all of "resilience" without hitting a wall.
Beat all of "quickening" without hitting a wall.
Beat all of "transcendence" without hitting a wall.
Beat all of "integrity" without hitting a wall.
Beat all of "tension" without hitting a wall.
Beat all of "perspective" without hitting a wall.
Beat all of "release" without hitting a wall.
Beat 100 daily challenges.
Beat "continuance" wave 1000.
Beat "confusion".
Beat "relief".
Beat "resentment".
Beat "reunion".
Beat "reintegration".
Beat all of "confusion" without hitting a wall.
Beat all of "relief" without hitting a wall.
Beat all of "resentment" without hitting a wall.
Beat all of "reunion" without hitting a wall.
Beat all of "reintegration" without hitting a wall.