I looked high and low for this, finally finding the only available instance on the Svenserver of SnarkCafe, with whom the Bard seems to have a strong affiliation. Don't understand why he didn't release it here, but never mind.
It's better and worse than the original series (I'll make a review later), but the points include high HP monster horde spawns, weedy spawn weapons, new maps, many features lifted straight out of HL maps, much player 'trolling', a terminally broken moving-platform player transport (map 1), a few map-breaking bugs, *huge* music track downloads and large map sizes - overall fun plus frustration in about equal measures.
All in all, a Curate's egg if ever there was one!