How to get all the codes for _supersecret

[lionamite]

19PzQ8arc11rkdv

19P: Simon's Apartment. Put the bobblehead on the desk into the toilet and flush.
zQ8: Munshi's Lab. Jump peek inside the ceiling.
arc: Site Upsilon. Login with the ID 5314. It works on both terminals.
11r: The ARK. Answer Calibration Survey exactly the same way as you did in Site Lambda and make sure to choose 3 for Question 8 on both.
kdv: The ARK. Finish the game without using any WAU flowers, except for the first one in Site Upsilon that you must touch in order to proceed.