A most entertaining set of maps that should have something in the bag for everybody who wants either freewheeling slaughter or tight challenge encounters.
If you're well versed in "doomy things", HMP might be a good place to start, if you desire a considerable challenge without getting totally steamrolled by the opposition right away.
If you want something more laid back yet still entertaining, HNTR is the place to be.
UV is for the most strong willed doomers out there who wish to push themselves. Paradise and Purgatory await, if you live to see it.
Small, fast. Not bad, but also not really interesting: you fight some monsters, and then a cyberdemon with the rocket launcher. Harder than the original E2M8 because there are no obstacles and the area is relatively small.
holy shit i got lost, and i fucking ENJOYED it. now there's some pretty amazing combat in each and every one of these gargantuan maps too, but you'll definitely need a guide if you want to get through these maps and their secrets too. so much fun still.
The last third of Doom II, reimagined by Lutz. And boy, what an imagination he has! Amazing architecture, brilliant lighting and shadows. Huge levels with insane amount of detail. Clever monster usage that doesn't turn into blind slaughter, but still keeps you on the edge due to strategic ammo placement. One of my personal highlights in 2017 when it comes to Doom mapping.