I got Source Unpack from the same site as the one in the resources tab and I can't run .bat files on Mac. It might just not be possible to play Source Unpack on Mac.

I got Source Unpack from the Source Runs website, but it doesn't contain the Portal.cmd file. I used the Unarchiver to open it and I am on a Mac. Any advice?

In fact, the only 2 strategies that doesn't work on steampipe are the 4/5 saveglitch and under the elevator. (I figured out a complicated workaround for the former, which is probably about 5 sec. slower or so)

This is a bit slower, but a lot more consistent