>>11888553
>>11888620
Here is a dehacked monster I made for triggering linedefs. It fires a shot every cycle (for GR door open stay), moves forward with a lost soul charge, so you can do the other actions rapidly (DR Open-Wait-Close, W1 Open-Wait-Close, and WR Lift Drop-Wait-Rise), and you can time him slower by putting him behind a series of teleporters.

https://www.doomworld.com/applications/core/interface/file/attachment.php?id=166057