Here is the full list of all 24 Photon Engineer achievements.
Analyze all objects in the game
Collect all the trophies
Reach the two rare materials
Enter the hidden code you found on the platforms
Escape the platforms in an unconventional way
Platform 09: open a door automatically 20 times in less than 10 seconds
Platform 11: use a maximum of 8 mirrors to open the door
Platform 12: solve the console puzzle with a maximum of 9 interactions and without using undo action
Platform 19: do not push any block to open the first door
Platform 20: keep at least two blocks in the inventory to open the door
Platform 23: trap yourself inside the first room
Platform 27: put two pusher blocks in different error states at the same time
Platform 30: solve the puzzle without transforming the pieces
Platform 31: transform the same puzzle piece 5 times without using the undo action
Platform 33: open the door once by exchanging the block in the barter room, and once without exchanging it (reset the platform to close the door)
Platform 34: figure out how to open the safe
Extra platform 1: open the door with a score of 42 or less
Extra platform 2: open the door with a score of 50 or less
Platform 34: open the door once by pushing one delayer block back and forth, and once without pushing back and forth (reset the platform to close the door)
Platform 27: push the delayer block in front of the blue laser
Platform 20: do not push a merger block to open the door
Complete the game without using any hints
Platform 32: solve the puzzle using no more than three lives
Platform 34: solve the puzzle on the left using no more than six lives