Normally, I don't like DooM (1 or UD) WADs because I tired shooting baddies with shotgun as most of them tend put a lot of shotgun guys/ammo and I have shot those full of shotty shit...well, this one can't escaped from that but I found author's tricky as I didn't found many of them(or they placed when I needed to use shotty), also the monster placements(with middle-tier ones) in this megawad helped too, even E1 doesn't suffers low-tier ammo-droping-fest unlike IWAD and most PWADs.
Level layouts and theme are interesting, some E3 levels just a little mazed but I feel okay, never get lost...many levels I feel plays like IWAD but better and larger, you'll found middle-tier monsters in E1 levels and it helps the gameplay, unlike the IWAD you'll have too much ammo in every level even pistol start, if you wasted too much and will out of ammo for sure(at least in UV).
All I can say about this megawad is...fun, vanilla fun. Except E3M8, the yellow key area with platforming when all enemies + 4 cyberdemons are try to kill me and battles-of-deal-with-4-cyberdemons-or/and-other-powerful-monsters are nasty to me, on top of them, the final "BOSS"...I feel trolled...really? IoS-style?? IT'S ****ING DOOM, NOT DOOM 2 WHY USE IOS-STYLE AS FINAL BOSS?! :P
(At least there is no respawning monster cubes just annoying cyberdemons and barons...but they're still give me a lot of headaches as the battle area isn't very huge and a little cramped I think...)
But at least IDMUS11 helps me dealt with those problems all, for some reasons I feel the main theme of Power Ranger does fit DooM...don't know why but I keep switch to the theme with IDMUS11 cheat if I don't like the level's music, helps me blast through this megawad and the nasty E3M8. :P
Download the REAL file here (rd1.zip is NOT correct) https://www.doomworld.com/idgames/levels/doom2/megawads/d64d2
Shocked to see so many negative reviews. I had an absolute blast with this one, and I'm not sure what Nems was talking about with the Boom stuff as this runs in Doom2.exe with no trouble. In fact, there is a TON of impressive vanilla stuff going on here. I guess it was so well done that it tricked him.
This deserves a high score. It's a lot of fun.
It definitely makes Doom look darker, but also slightly changes colors (it reminds me PSX Doom). I prefer original Doom colors and miss how it looked on CRT (almost same colors as with modern monitors, but less brightness and maybe more contrast).