Game:

Black Mesa (2020)

Duration: 0:00

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1

In order to unlock the Orbital Trajectory achievement, you must reach Chapter 15, Xen. Right when you start the level, head up the slope and go to the right where you will see some yellow/golden crystals. Just past the crystals, you will see some rocks floating in the air.

Stan a bit back away from the ledge and perform a double jump to land on top of the small rock straight ahead. This may take a few tries, so once you make it, make a manual save! This took me a few tries to land on top correctly.

Once on top of the small rock (and you saved, if you want), you now need to double jump to the rocky platform on the right. I cannot even express how much this got ANNOYING. I either hit the rock above my head, didn't jump even though I pressed the button, or bounced off the wall. Just keep at it until you make it, AND THEN MAKE A MANUAL SAVE! Seriously, this was by far the worst part.

Now that you have made it to the platform, you will see a cluster of rocks ahead. double jump onto the small rock directly in front of you. Once you are on top of the rock, look to the right. You will see a landing pretty far away. Sprint, and then double jump to the landing. Once you land, the achievement will unlock!

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