I need help with the Merchant, or specimen 6.

[pasta864]

I can't get past him. everytime i look for him he's nowhere to be found in the room, so i can't stare at him, and, when i see him, he changes position and returns invisible and kills me. other times he spawns in the middle of a hallway and when i try to pass, he damages me. can someone tell me how to win his section?

[Kataerpillar02]

I think in this version he always initially spawns the same distance ("128 units", 4x the width of the average corridor, or more or less around the point where your vision starts to get obscured by fog) to the "west" (the opposite of the direction you're facing whenever you enter a room) of your current position after you've been in the room for 3-4 seconds or so (except for the first room of his chases, in which he'll always spawn instantly), which also means that he can spawn out of bounds and thus be invisible to the player. Regardless, he generally shouldn't get any closer as long as you can figure out approximately where he is and keep facing that general direction (though he still won't move if you glance away from him for half a second or less), however he can teleport to a random place in the room if you stop moving forwards or backwards for 8 seconds.

In case this is at all relevant, in HD Renovation, he behaves slightly differently. In that version, according to the wiki, upon facing away from him he will wait 1.5 seconds to teleport instead of 0.5, but he will also always teleport if you face him for 10 seconds straight even if you're moving, and whenever he does teleport he can now pick any random point around you, instantly dealing damage if you're not already facing the direction he'll land in. He also generally doesn't go out-of-bounds in that version, thus meaning he can't hide behind exterior walls and whatnot unlike in the original game.

Take all of that with a grain of salt because I could easily be misremembering and/or misunderstanding any part of this. For a probably much better and more reliable explanation of his non-HD behavior, I'd recommend watching Ryan J.'s "Let's Learn the Rooms! (Part 2)" video on YouTube starting around 3:55 and ending at 8:43, or if you have more time to spare, his "Everything You Need to Know about Specimen 6's Chase in Spooky's Jump Scare Mansion!" video for a much more in-depth guide.