1. It's not a 135 turn jump, just press forwards and jump, you'll slide right onto the block, as the sign says; If an unmarked barrier isn't allowed, I'm guilty, along with 60% of all maps. + It's not even a jump, it's a failsafe in case someone falls
2. you're coming from the right, you can see the vine clearly
3. why? I don't care if people roam around my build, mostly when every place you can get from the head are in previous parts of the map