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Opposing Force - of1a2 Osprey helicopter skip

Half-Life: Opposing Force

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This strat was originally found back in August, 2014, but was never made public.

It saves around 14 seconds from quadrazid's 19:23 Opposing Force run.

Had to do this in 3 segments, so the slowmotion part appears to be choppy at the segment transitions.

Performed on the Steam version of Opposing Force.

-- Explanations --

https://i.imgur.com/aWJsV5F.jpg

There's a kill trigger at the bridge down the drop, and the only way to disable it is to go through the Osprey helicopter area. For some reason, however, this trigger sometimes stops working for a very very short period of time, and that it's enough to land a jumpbug and skip entering that helicopter area.

I'm not sure what exactly causes it to stop working like that, and how long it's inactive, but it seems to be random. That's why I take a longer route and jump off the railing at the beginning, as jumping down straight away will not work as the trigger down there will still be active.

Since there's very little time for everything, I have to open the door before I can touch the ground, to give myself some room for the upcoming airstrafes. As soon as I land the jumpbug, I must crouch, because the kill trigger will have reactivated by then and I'll die. Crouching will make me float just above it.

While I'm crouched, I can airstrafe inside through the door just enough to pass the trigger and land on the ground safely (there's no kill trigger inside anymore).

It's also possible to use the 501 fps slowdown trick on an older version of the game to get more airtime while airstrafing through the door.

Since this trick is pretty much frame perfect and luck-based (you have to get lucky timing with the trigger inactivity and then perform a jumbug, edgebug is possibly too slow for this), it's only viable in a segmented run. If you pull this off in a SS/RTA run, go buy a lottery ticket.

Enjoy!

http://twitter.com/execut4ble
http://sourceruns.org

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SwiftSide 25 Dec, 2020 @ 12:15pm

That looked like a video splice to me

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