also the ui, which is better than that of most roguelikes ive tried. it shows that there's been a lot of work done to make it approachable to new players.
even if i have played many roguelike, and i'm used to the not-so-user-friendly ui's of most roguelikes, i will try to take the position of a player new to roguelike games, and leave feedback to further ease new players into the game.
at first i was gonna make one giant post with feedback on the whole ui, that just felt like too much work

first up:
tooltips:
i'm playing on a 24" 1920x1200 monitor which is by no means exceptionally large these days. one of the few things i find tedious with the current tooltips is that they require you to move your eyes a lot back and forth over the screen.
for example the skill hot bar, if the skill tooltip was displayed by the mouse cursor when hovering over a skill icon you wouldnt have to move your gaze to read it. same could go for enemies.
in the inventory screen its also quite annoying that the tooltips stay visible even when moving the cursor out of the 'item area'.
trying to view the paper doll in full can also be hard since the tooltips of items in your inventory are displayed directly over it. why not displaying them below and to the right of the cursor?
beeing a total loot whore, i love the item system and having items with loads of stats. i do think readability of these tooltips could be enhanced a lot tho.
here's an idea of how it could look (new on the right):

my point here is sorting and grouping stats on importance and shorten unnecessarily long names, conforming to standard rpg naming ('damage' instead of 'base power')
like 'it must be held with two hands' shortened to 2h etc. another example, displaying damage type when it is physical damage feels superfluous, this being the 'default' and most common damage type, which i think most players also know.
instead just type out the damage/crit type if its NOT physical.
i've left some of the stats out in my version of the tooltip. 'uses stat: 120% strength', is this not the same as 'requies: strength 11'?
lastly on the topic of items, the one thing i'd love to see are set items. havent played that far so not sure if they might already be in the game? (edit: found one, yay!)