Tub, here's a quote of the description of that video:
"This gameplay uses savestates, which are everything when playing this hack. However, this is not a TAS (
http://tasvideos.org/FAQ.html )."
I'm familiar with that run though, I'm doing as CPadolf said; same route with some missile tanks (possibly etanks) skipped, and much faster and smoother. CPadolf, in which rooms should I be using the underwater walljump? Also I don't know how to do it, but that's not something I need to know at the moment, as I haven't yet fought even Bomb Torizo.
As for my progress, I'm already in the vertical pirate shaft with missiles and morph ball. I think I'm doing pretty well, figured some ways to collect the items quick, not hitting any spikes. There's only 3 rooms left before Torizo fight though, and I've never fought a boss with tool-assistance. Would you guys give me some tips regarding this fight? :)