Download this map!! Four levels make up this adventure and probably the best part about it, it is designed for co-op play. You can also play it solo. I can't say enough good things about this map. I first played this when it was only for Marathon 2 back last November. The third level really intrigued me, at least to the point of going into Forge to figure out how he did the tricks. There are multiple paths to the end, some easier than others. Save terminals for the solo players. No Dead Ends! and with this Infinity update it basically improves overall game play.