: Let me set the stage, for those not in the know. On the level The Ark, after
: clearing out the two AA Wraiths, the FUD comes down and provides you with
: tanks. In speedrunning, we just take the ghosts we used to get there, but
: legendary has always eluded this. Only when segmenting and through intense
: repetition could we complete this trip without the tank on such a
: difficulty, and if it could be done reliably, it saves anywhere from 30
: seconds to over a minute versus the tank. I recommend reading the
: description for some more information. I and others have done a lot of
: work with this, and I won't be able to credit everyone, but I'll credit
: those that helped me whether they knew it or not.

: https://www.youtube.com/watch?v=llU89pu-YLY

Update: If you try this and are noticing issues getting all of the vehicles out of the cave (there are a bunch of ghosts and prowlers in there) this video should help with that.

https://www.youtube.com/watch?v=DYt1_vcomLo