Bro tysm for this guide interloper was a pain in the ass. The eight launch pads before the body vent towards the end was the worst part for me by far.

I think there are many ways to achieve it. :)
Not sure why I thought that a rocket jump would do it, but I'll just take it as TF2-soldier reference. :D

And yes... It was an awful ride, yet I like how rewarding it felt when I finally got through. :)

Great video. Thanks. FYI, out of desperation I found that you can circle back to the original plateau from the middle rocks. Once you pass the middle, no joy, at least for me.

Oh and congrats again for achieving it. :)
Quite an adventure. ^^

Mindreader! XD
I just thought about this too yesterday and recently recorded a clip where I do the start by shooting the items over the floating isles like in the end.
I got that recommendation by another player who partially recorded Interloper.
I'm still uploading when writing that post, but here would be the link:
https://www.youtube.com/watch?v=dQrATYfZj9Y
^^

I just finished the series. Thanks again. I didn't try to use the cannon to boost the items across the gap--that would have worked but I didn't know it was an option until I saw you use it in later segments. I got all the items to their respective ends thanks to your videos.

Weird, I've uploaded this months ago.
There was an update that changed weapon behaviour?

The RPG boost does not seem to work now, nor do the other weapon boosts. After all this hassle, hate to abandon a hat or pizza box atop a middle of the air rock, but that’s as far as I can get

Ah, finally 4K is available. :D
At 1:02:04 you need to jump on top of one of the Alien Grunt Pods to get over the forcefield back to the hat / pizza you left there. I accelerated that part mindlessly. Sorry.

Guess the 4K version will take Youtube ages to process. I should have played in 1080p anyways as of performance issues and turned off autosaves to reduce stutter, but I couldn't resist on having these visuals and relied on autosaves especially when transitting between maps.