Suncho's port of Skyrat's popular 2-6 player multiplayer map, Pyroglyphic (which was not compatible with Mac D3 1.4.1). MAC-Attack! is the inside of an Egyptian pyramid, with complex architecture and lighting. Pyroglyphic has long been one of the most popular levels on PXO, and now this version can be played by PCs and Macs alike.
Use StuffIt to extract .zip, and drop into D3 Missions folder.