Description Arctic Adventure - modification about adventure of Gordon Freeman and Alyx Vance to the arctic. Modification based on own story which will continue the tradition of Half-Life 2. In Arctic Adventure you can visit more new locations and meet old and new friends or enemies...
Also Arctic Adventure have advanced features to make more fun, for example : Iron-Sights, Challenge maps, Dynamic shadows, Improvement weapons from original Half-Life 2 with some new, High Definition character models and skins, Support for community made bonus maps and a lot of more... To install:
1) Move "aa_mod" folder in "Steam\steamapps\" folder
2) Also you need to extract ep2 content via GCFScape in
"Steam\steamapps\common\Source SDK Base 2007\"
So it looks like "Source SDK Base 2007\ep2\"
note: Without point 2 mod will work uncorrect.
This method is universal to run SDK 2007 mods via steam.