I've just finished all 4 episodes of the Atomic Edition, and while the highs are very high, the lows are very low.

Hitscan enemies, unavoidable fall/environmental damage, pitch-black areas it's impossible to see in, switch "puzzles" you can only brute force, and the worst kind of "where the fuck do I go" shit that gives me pause each and every time I find a keycard in a random air duct, or a teleporter behind a bookshelf that didn't open, or I look up a walkthrough only to discover that I had to jump through a solid wall to progress with zero indication I could do so.

All of that seriously brought down my whole experience with the game. If anyone knows of any mods that attempt to fix these issues, I'd like to hear about them.