Recommend me a Doom WAD to play

Going off the tangent that you enjoy puzzles, you might want to mourn Jim Flynn by playing all his maps : www.doomworld.com/idgames//index.php?search=1&field=author&word=Jim+flynn&sort=time&order=asc&page=1

I recently enjoyed playing Jenesis and then Lost Civilization

Awesome dude, hope you enjoy it. MAP01 was one of the hardest in the set if I remember rightly.

Premature SlayeR.wad review: On MAP05 of SlayeR right now. If this wasn't made in the early 2000s I'd be taking the piss out more on those Doom level design essays and posts about always making sure the player is moving and all that sort of trouble for the player. So far it's a pretty tough mapset that definitely me of those challenging 2000s maps that skilled mappers made, and my first taste of MAP05 reminds me of Kama Sutra's latter round of maps. Some maps I find wanting there to be a bit more health, and in others some more ammo. Especially rocket ammo. There could be more space variety too since combat is always kind of tight and I take damage when I try to take cover a lot more than I feel I should. I'm not masochistic (or I guess gud) enough to enjoy it as much as the creator or the speed demos archive folk might but I still like being presented the challenge (not that I'd want these kinds of maps submitted for a DBP of mine though). Definitely would not want to pistol start every map (I always play continuously but even more so I desire here). It's not as nuanced as the original Plutonia was but yeah it's cool.

Finished SlayeR. Once I passed MAP05 is when things started to be less of a grind and more fun for me so this is where the really good stuff starts. MAP06 is the last map using the Plutonia textures and while it was still painful with symmetrically placed archviles on two sides of an arena that also had some infinite height blocking hanging bodies I liked it most of the Plutonia part. In my premature review I said MAP05 reminded me of Kama Sutra but that was only in my first impressions of the design and I meant to say MAP31 since I took a peek at that before shutting the game off. Oh and I just realized that I've been playing on Ultra-Violence this whole time too. Fewer chaingunners and such on lower difficulty settings I see. I gave MAP31 a go on HNTR mode and it was okay though neutered that way. Normally I'd ignore it but I liked this WAD enough to give the bonus map a go.

Anyway I'll choose MAP08 as my favorite of the bunch. I can appreciate parts of the previous maps too but MAP07-MAP10 is the stuff I really wanted to see that I had a good time with. Well made maps with level design that inspires me, with challenging gameplay too! Fun!

Good WAD. I just don't like "Plutonia-as-it-is-remembered" pain cages. So yeah I'll recommend those maps to you guys too, though your experience will differ from mine if you choose to start with a pea plinker of course. 

I've been playing Crusades by Richard Wiles as well as a few of his single map releases after completing SlayeR and I have to say that wow he's a great mapper. Again, very inspiring and I may even take some personal notes on the level design in some of my favorite maps of his. I am compelled to doodle design layouts on paper. Really good stuff that I really like.

Thanks! I've tried it out before but don't remember playing more than the first few maps so I'll check it out again!

First level punching Pinkies. Check!
Oldschool 1995 style. Check!
Minimalistic interesting architecture. Check!

I like these oldschool hidden gems. I've played a lot and still find new ones!

Vertical big single level WAD? Thanks, I'll check it!

if you haven't played this 2019 map yet, i highly highly recommend it:
www.moddb.com/games/doom/addons/entropy

I haven't actually played Doom in a while (for my own entertainment -- not playing to test stuff) so I decided to finally give Akeldama a run. I'm 6 maps in and I love it so far! It smells like a spiritual successor to Requiem. It plays really nice and it feels like its something from early 2000s. Very nice work everyone involved