Really great audio kit, I was a huge fan of Half Life 2 and loved the atmosphere of that game, the sound design of which was a really big part of it, and your pack really captures the same kind of vibe perfectly.
I wasn't a fan of the gun and explosion sounds but there are lots of other resources online to find those kinds of sounds, all the ambient music and general SFX included in the pack are excellent. Thanks for making this! ^_^