Gordon and Alyx set off through the outlands to destroy a Combine controlled base, which is harboring a rocket capable of wiping out the Resistance.
This removes a problematic part of a puzzle in one of the maps. While not necessary to download this in order to play the mod, I highly recommend it.
Can I download this if I'm downloading the mod for the first time? Or do I have to download the base mod first, then this?
Download the base mod and install it first. Then download this (as it fixes a puzzle), and override any files it may ask.
*Edit, also don't forget to install Map Base, if you haven't already.
what is map base
Passed this mod in almost 5 hours. There were interesting puzzles in the style of how the Valve was made in Half Life 2 and episodes. At the same time, the style of the classic half life is preserved. I definitely recommend it. Thanks to the author for the quality work done.