This is not only a great mod, it's one of the best FPS games I've played. Amazing work.

The levels are huge, with a variety of interesting locales. The combat is fast and deadly, and although there are no headshots (a limitation of the GZDoom engine?), the gunplay is still quite satisfying. A grenade in close quarters will wreak havoc. And it's great to play an FPS where the shotgun actually has some frickin range. Some rudimentary stealth is possible, but enemies will notice and start attacking you fast.

It also makes me realize how much I love the grandiose mythologized version of WWII, with the Nazis secretly researching futuristic tech while also unlocking ancient occult secrets. It's historical fiction, science fiction, and fantasy all in one.

The game is a tad difficult on the default setting, being designed for Doom diehards by Doom diehards, but the easier difficulties still provide a great experience. For a first playthrough, I think the difficulty one notch below the default is just right.

This game starts out good, but then it keeps getting better. An instant classic.