I'm playing through Sunlust (using the AoD mod) and it's not pulling any punches. Unfortunately the slick graphics and architecture can't make up for some of the piss-poor levels I've come across. The first 7 levels or so are awesome, especially the one that has an exit that comes straight outta TRON, but now I'm on Level 15, having gone through 4 levels in a row that are pretty much identical in both appearance and gameplay...and they're boring. It's just obvious trap after obvious trap after obvious trap, in dark twisting hallways with walls dropping down the minute you even look at a switch wrong. I'm hoping this ends soon.
As for anyone using the AoD mod - after careful examination (read: Being killed dozens of times) I think it's safe to say that the best way to enjoy the mod is to disable only the "Heroes3" monsters. These are monsters taken from Might & Magic 7, and while most of them are just harmless cannon fodder, four of them are total assholes that can ruin your day.
# Air Elemental - This otherwise invisible fucker launches whirlwinds at you that don't care about details such as elevation or scenery - they just go around that and hurt you for too much damage considering how weak this monster is otherwise. Meeting one of these early on can easily kill you.
# Angel - He's quick, he flies, he's tough, he can put up an invulnerability shield (blue sparks flying around him), he can resurrect dead monsters and he has a fast-moving projectile attack that packs quite a punch.
# Megalich - He has a variety of powerful spells that usually do area-of-effect damage over insane distances for ludicrous damage. He's a boss monster, sure...but I'd rather fight 3 Cyberdemons at once than this guy.
But the biggest fucker of them all is...
# Thunderbird - He looks like an eagle on fire. He moves like a Cacodemon, has a flamespout attack that can really ruin your day and has the annoying ability to get back up once it's been dead for a while. A cool thing about that is that the Thunderbird can then decide to be an ally - if he has a green shimmering orb around him he's friendly and will attack hostile enemies - if not he'll try to kill you and will usually do so via his suicide charge. That charge will do INSANE damage - for a mod that allows for 666 health and 500 armour, I've yet to survive a direct charge from a Thunderbird. Worse yet, even an allied Thunderbird can decide to suicide charge another enemy and kill you stonedead anyway - friendly fire surely isn't. (At least a charging Thunderbird dies for good after a suicide charge.)
Another suggestion is to disable the "Joke" monsters. AoD has a high share of "clown" monsters now, and none of them are any good. Worse yet, one of them packs a weapon (that you can then pick up and use yourself) that's the cheesiest rocket launcher I've ever seen: A homing missile that releases toxic clouds upon detonation that home in on hostiles.
But the thing is, I'm not too hot about this latest version of AoD. I've yet to find several guns from older versions that were tons of fun to use, and I'm missing several enemies that were also fun challenges instead of cheesefests of death.