Hey Goose, nice video. Even considering I have a worse time than you now, I think I'm able to help you

. I have watched your video and I have think that you can win some seconds using your strat by doing a little change. They are not many seconds, but any improvement is always welcome =p.
Ok, set the video at 0:48. When you stop using the hoverbike you go right to thorw a min, right? Ok, in the alternative strat, go left instead of going right. In near 1 second walking, there is a way to the left (obj 5) and there is a little hole in the right. Throw the first mine there. Continue running till you see the other 2 bots and throw the 2nd mine to them. That's all. Since I know my English is crappy, I'll try to make a video or a picture or something... Well, I won't be in Spain till 13th August, so maybe better a picture :S.
This strat is slightly faster than yours (maybe near 3 seconds saved), and it's equally consistent

:P. Just do the first mine throw from there and the second one like in your video (you'll have to shot it farer, but ok).
Well, I hope this helps you to get that sub 2:05

. Also, if you say sub 2:05 was possible with your strat, maybe sub 2 is possible now =p.
Ok, I'll try to make the picture in my free time

e.e
Anyway, the way down the cave is very easy/consistent if you practice it a bit

.
Also, amazing video, Ace.