Black Mesa – How to Obtain Contest Propellant Achievement

This is a comprehensive guide to get a secret achievement.

Contest Propellant Achievement Guide

Please note: all credit goes to Powerfull!

Getting the Achievement

Start by loading the chapter ”interloper” and progressing trough it like you normaly would until you reach this part.

After that press the button and be prepared to take out the mind controlers (i recomend you do this without killing a single vortigaunt if you want to do 100% as, you’ll need it for the ”PHD in pacifism” achievement). After that go trought this vent like you normally would.

Then look to your left, you should see two boxes. Get them out of the way and go up the stairs into another room and the achievement is done.

Egor Opleuha
About Egor Opleuha 8086 Articles
Egor Opleuha, also known as Juzzzie, is the Editor-in-Chief of Gameplay Tips. He is a writer with more than 12 years of experience in writing and editing online content. His favorite game was and still is the third part of the legendary Heroes of Might and Magic saga. He prefers to spend all his free time playing retro games and new indie games.

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