Map quadfrost for HL

QuadFrost by Napoleon Background: Hidden away in a foreign land, there are enemies and airstrikes. Fight your way through a frozen tundra military base. Survive the frost throughout each quad. A "DoubleFrost" nightmare at high resolution. This is QuadFrost. Special thanks to Dario Casali, who originally authored the map, DoubleCross. And MrGnang for inspiration. --- An original add-on to Cold Ice Remastered https://www.moddb.com/mods/cold-ice-remastered