Скачать или смотреть Barkley 2 speedrun -

So, it took me a bit but I was able to figure out how to get onto the rooftops. There's some really stupid things you can spell out on the spraycan wall, and I might show those off in a later video.

You find what you're supposed to up on the wall by buying a Pravda Tir na nOg and giving it to Sviatoslav (who is due south of the Booty Bass contest) to decode. Also, if you pick up Joad's note and give it to the console guy in the L.O.N.G.I.N.U.S chapterhouse, you get a unique jerkin, instead of the +1 to Guts you get from Gelasio.
I die about 3 minutes in to skip a little section where you have to make butter for a grotesque Duergar, which saves a little time. My theory on why this does that is that the 2nd level of the sewers has a different spawn point... which is conveniently past that section. After that, I go back and forth a little because, as you'll see, I had just /barely/ enough ammo to kill the Bass Mother with the gun's I collected.