Seriously there is achievement called "Adom grandmaster" - involves getting all other achievements.
What are the chances that "someone" is crazy enough to work toward it? Well, about 100% I guess

Let's review the essence of task - aka problematic ones:
Achiever/Overachiever/Adom grandmaster
Unlock 40%/80%/all other achievements
Grandmaster seems rather problematic, currently I have 34/83 [~41%] Achiever is still locked.


The Grey Hawk/The White Eagle/Everything for this momemnt
Ultra neutral, lawful and ultimate chaos god endings I guess?
Neutralizer / Revered martyr
"Slay Chaos God in your crusade for Balance", same for order
Not sure if there is difference between first group and second

Avatar of thieves
Steal an item worth at least 6,666 gold
[teleporting out of shop worth artifact in hands does not count at least at moment of writing, but unlocks shoplifting achievement]
WTF does count? My initial thought was pickpocketing artifact/RoDS.

Beloved by fate
Win with character created via fate decide.
Depends on play style I guess, for me it is probably rolling fate decides untill I get something I want to play...

Give and take
"Spend total of 90.169 gold pieces in shops with one character."
Cheapstake way of selling bunch of loot to Waldy and rebuying artifact for 94k~ish did not work.
So is this balance [aka spending your 90k gold] or you need spend exact sum. Hopefully not later.

"Speed demon"
Win in under 10k turns.
Well, personally I found it being mighty problematic before changes to darkforge, tp spell cost and HP casts abusing toughness, xp changes does not help either. Still pullable I guess and still wizards only.

Scoring monster
Score 50mil.
Covered by "speed demon" I guess.

Ocean's eleven
"Successfully rob Casino shop"
Well, grabbing loot and zapping shopkeeper with wand of far slaying from opposite wall gives loot but no achievement. Next on try list blocking doors with pet.
I had similar experience with shoplift one - teleporting out counted and attacking shopkeeper didn't.

Old style challenges:
Eternium man:
lv50 in SMC - with gremlins being nerfed to ground... raven born gnome wizzy who starts with book of summon creatures and scroll of familiar summoning, get good bookcaster and 60PP at lv3, summon mobs let familiar kill them. I think if areas DL is low enough vortices can not be generated. Would be boring to extreme.

Iron man:
As far as I am concerned wizzard probably drake. Drake wizzies start with horrible learning although.

Lithium man
Does not sound to complicated.

Magic hater
Win without casting spells.
As far as care about wands of wonder is taken, should not be much of problem.


Plant hater
Win without using herbs, plants and related skills.
So herb training, stoma, logs?, wooden stakes?. Herbalism, gardening and probably bridge building and fletchery is off limits.
Well, melee char who starts with healing and reasonable stats should do okay. Something like dwarven beastfighter/orcish paladin.

Plutonium man
win after killing 95% of each monster.
IIRC attempts at plutonium this realistically requires wish engine, so likely Archmage as that would knock some other easily. Ring engines was nerfed in some unknown way, I believe.

"Steel man"
I think everything that was used in original steel man win is working. Well, maybe lochs give less xp, so might need two wishes instead of one.
Core is still get some danger scrolls, raise DL to 8+, install some summoners, kill mobs, sort loot.

"Titanium man"
Win before reaching xp lvl 20.
lv 20 is ~2mil xp, so late game needs heavy use of slaves, pets, Hawkslayer, etc.
My best bet is play bard as normal to level 15, tame giant boar and protect him [so need roll bard with concentration and get healing book].

Untill there is more stable version I guess I will put some effort towards lithium, ironman challenges.