Well first off trying to break the game and skip stuff I found that you could get the main quest and the teleport before doing the mandatory arena training.
Picture 1
You clip through the fence using Dodge Strike, the strike part of it. Then you can just walk to go get the main quest it's there available for you, you also get the teleport available to town and can go activate the Startington teleporter.
While trying to find a way to get South via Out of Bounds in this "Arena" Town I found a wierd glitch.
Picture 2
When "OoB" if you try to walk to the stairs shown here you get teleported down the steps and you're back inbounds. However, using another glitch that I found and someone else already reported, you can do an extended slash with the Dodge Strike if you backdash out or in of building and then use the Strike part of the move. So I went into the building, which you can enter even though the doors shut, backdashed out walked near the edge of the stairs and used the extended strike to teleport down the steps and try to do something. As a result I got this.
Picture 3
I can stand in the foreground of a lot of things like lamps and barrels in town also on top of that.
Picture 4
There's a wall here now for some reason I don't know why but it is there, it's an invisible wall of course. You can also carry this effect of being in the foreground to the Eastern Evergrind Fields, but if you go to the Pillar Mountains it'll stop working, Teleporting also takes it away and trying to go up the steps on the left side of Evergrind City it will take it away.
Picture 5
I also found a clip inside the city wall from the Eastern Evergrind Fields it also let's you enter the city in a wierd place and it puts you in a wierd place inside the city.
Picture 6
Picture 7
So you first Dodge Strike with the strike part once more into the wall on the left facing left, you have to hug the wall to get in. Then you Dodge Strike downwards with the strike part and it'll hit the zone that loads you into the City.
Picture 8
It loads you in this wierd position that isn't at the entrance at all, probably tries to put you inside the wall or something and pushes you out. But that's all I found right now. Trying to see if I can get to the South in "Arena" City and skip Arena entirely.