Discard the T-Bar

For those who don't know or want to get rid of it while doing the Minimalist achievement.

There are a total of 4 spots you can use the tool in A scenario.

After grabbing the T-Bar from the Cable Car Platform

Use it to open the G-Adult's section to obtain the Chess Plugs and Sewer Key. GET THE SEWER KEY.

After obtaining the T-Bar

Head back to the Lower Waterway to open up the Workroom Lift. This will allow you to use the sewer key to head back to the secret room.

With the Sewer Key

Open the Workers' Break Room, move the yellow taped cabinet, go up the elevator, climb up all the stairs and go up another elevator. This should take you back to the secret room after completing the medallion puzzle. Use the T-Bar on the slot.

The last and most overlooked spot

Heading all the way back to where you first drop down to enter the main sewer areas from the Water Gate, it will be directly to the left in the Upper Waterway.

[Rascal]

No problem you handsome man

[Niragiです]

thanks!

[Oomukade]

It took me ages to find that last spot, thanks for ending my suffering ╥﹏╥

[Erials]

Oh thank you! I was looking how to throw it away on my Minimalist run, somehow overlooked that last door :/ Finished the rest of the game wearing that T-Bar everywhere >.<