All early spiders save Sword Spiders are poison resistant. I think all late ones are also but have not checked thoroughly.

Do all venomous animals need to be poison resistant? The enchanted forge tile is busted, shows a blank space ingame (or at least the 4-use ones do).

In my view, they should for more consistency.
Example: Don't red / ruby serpents have fire resistance? Fire drakes too, right?

Looking at the monster list, this is true of all venomous animals with three exceptions:
Werewolves
Unrelenting horrors
Green serpents.

The last appears to be an oversight as other serpents resist their elements. Werewolves are consistent in all forms and were clearly designed to be susceptible (I suspect they are not meant to be considered venomous as such but have festering disease ridden maws the game does not model differently). Unrelenting horrors I have no real opinion on.

What does that mean?

Do all emerald serpents, regular and ancient ones, have the oversight too? You plan to fix these oversights?

I describe green serpents as being an oversight precisely because no other serpents have an issue.

Werewolves are not I think in canon supposed to be naturally venomous the way snakes or spiders are. The only werewolf known to have a poisonous bite is Carcharoth, the Red Maw; others are a matter of speculation and the effect is presented as more magical than innate in any case. This I think underlies half and Scatha's decision to have werewolves be poisonous but not immune to poison.

I am slightly annoyed at the line of questioning, given it started with incorrect and unchecked assertions about spiders. If you find something actually wrong, please flag it, but I am not minded to run around following every line of speculation you have about things that could possibly be wrong.

The (voices?) part looks like it escaped the editing process. I think "[...]faint voices[...]" flows better myself.

EDIT: Pretty sure Carcaroth's poison fangs are analogous to Eitr given how much Tolkien was influenced by Norse mythology.

Formidable is creating message spam. If you fight a room full of whispering shadows you get constant unaffected message from each of them.

Speaking of speculation; just noticed that there are no acidproof cloak egos. Not a biggie, but it does make lategame item/nameless things management slightly more annoying.

EDIT: Morgoth Bauglir, the fell enemy and black lord of darkness can be slain by mortal hand.

EDIT: Chasms can be generated as to completely cut off a levels up and down staircases. Happened during my ascent. Not a biggie; although it might've been.

EDIT: Carcaroth's tile is bipedal, which is not consistent with his description in the Silmarilion (which is specifically the biggest wolf, specifically bred as a nemesis to Huan).

Agreed that faint voices would flow better.

I was unaware of Eitr, that's interesting. Thanks for the link.

Thanks, will take a look and fix this.