The sc_xmaspak1.exe file you have requested: Maps Levels Missions / Sven Coop Maps / SvenCo-op Xmas Pack - 1.92mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
A Map pack containing 8 maps. The pack also includes the Recon Grunt player model, re-skinned by Zhukoyev (Recon wasn't included in 1.3 'cos it was too easy to mistake players for normal grunts).