My last roguelike was nethack and probably the genre improved on it and things changed. Example: I was surprised, and not pleasantly, that this game doesn't use the same keybindings of the rogue/nethack tradition. I had to read the docs to learn how to pick up things. It turned out it's "g" (lowercase and not uppercase as in the doc). I didn't find how to rest: "." didn't work but I confess I didn't spent much time on it.
You can also play online at https://crawl.develz.org/. It uses the Nethack keybinding for the most part, and you can get access to help in game by typing '?'.
Strangely enough, this was one of my initial motivations for starting to hack on my own roguelike about twenty years ago.
I learned to play MacMoria and later Angband using the numeric keypad and never learned the Rogue keybindings. When I got my first laptop and it didn't have a full numeric keypad, it wasn't so easy to play Angband anymore. So I just started tinkering with my own game instead.
Yes, the keybindings for Hauberk are idiosyncratic (and not at all documented). I do like them, though. I've tried to make them ergonomic, at least for a user of a US English laptop keyboard.
There are some alternative keys but I keep mixing them up with (the more traditionally roguelike) vim keys, which they are near but not quite similar enough to.
Looks really beautiful though! Enjoying bashing my way round; I don't know Dart but I'm looking forward to taking a peek at the source later.
(My favourite actively updated roguelike is Dungeon Crawl: Stone Soup. There's a new version due next week...)