I've managed to push a Propane Tank from before Saferoom 2, into Saferoom 2, and use it to skip over the train in the last section.

Possible to skip the saferoom entirely and get to the truck and gascan section, but unable to pick up the gascans themselves despite them being there.

You can also squeeze through the steel doors that open up at the start of Laby by the first sigil, but it won't let you progress and acts as if there's a fog wall.

I'll be testing some other suspected skips soon so I'll make replies to this post for archiving and looking-at.

Though the ZAT Speed running ''community'' isn't very big, I hope you will find your way good-and-fine around this place. PM me if you've got any questions.

In the coming days, I'll be writing a guide for basic running, and things I've discovered about the workings of the game, to hopefully help people along.