Lost Alpha is a new episode of the S.T.A.L.K.E.R. series made by dezowave group for free!
While we are actively working on the 2nd patch, Vincent Vega is working on the R1 (static lightning) render and new weathers for it, and for other render types too. This addon will be released sometimes after 2nd patch, it's still hard to believe R1 can look so beautiful even in 2014 :)
A little note on 2nd patch: We are testing monster reactions at the moment, because some mob-groups, where we developed dynamic smart-terrain system wasnt reacting fine, or sometimes wasnt reacting at all to the player (mainly sarcofag level, but some other undergrounds too). Thankfully npc ai is working fine now, and the patch changes log can be found here (updating it constantly): Dezowave.com
If anyone is interested, here is my (dez) progress in testing keypoints as I wrote above: (might contain spoiler!)
Dezowave.com (still at least 5 keypoints to check, which aren't listed in the text file yet, but I will also keep it updated)