The first platform you skip with walljumps in that 1-4 vid is completely unnecessary, you can just jump over the entire section. (The second one is useful though.)
(47 seconds in)
Here's a youtube playlist from Omgarrett for GSTD, I don't think I found any skips that aren't in these vids.
https://www.youtube.com/playlist?list=PL-L4-W3HYXp_7J6Og6t9gvNyFMnLT4qo6
And his full game PB http://www.twitch.tv/omgarrett/c/2392201 , I can't remember if he changed anything between the Youtube vids and the full game run.
(47 seconds in)
Here's a youtube playlist from Omgarrett for GSTD, I don't think I found any skips that aren't in these vids.
https://www.youtube.com/playlist?list=PL-L4-W3HYXp_7J6Og6t9gvNyFMnLT4qo6
And his full game PB http://www.twitch.tv/omgarrett/c/2392201 , I can't remember if he changed anything between the Youtube vids and the full game run.