This game is a lot of fun! It feels like old shooters (DooM, Heretic, Blood), but it has enough fresh content to make it unique. The gameplay is solid, the music is fun, and it's just generally a good experience. I have only played it on the Hard difficulty (second highest) so far and I found it... quite easy? There seems to be a lot of ammo, especially after you collect a decent number of weapons, though I found I use the shotgun about 90% of the time. The monsters do change from world to world and it definitely feels that the levels are quite different stylistically and it doesn't feel stale (though many monsters have very similar attacks between one another among worlds). Something that adds to that is also a downside - the levels feel quite short. I am about halfway through in 2 hours, which is quite surprising. The guns feel pretty good, though the big amount of weapons means you might not even bother shooting many of them. The spells are interesting, but I have only used one so far, and very rarely because I forget about it (and I'm not punished because of it, they seem quite optional). I will also use this opportunity to say that I haven't died yet, and in fact, haven't even come close, it just doesn't seem like the game is hard enough on Hard (I am not bragging, I am decent at shooters, but not super good). With a good gameplay, nice and quick levels, good sound & environmental design, but that lacks much challenge (on Hard at least), it is definitely a fun game to play, but not as god-level as the game's inspirations. I would definitely pick this up if you've finished DooM, Heretic etc. and want to put a few more hours. Alternatively, it might be a good way for newcomers to old-school shooters to get into them, it's quite enjoyable.