Thank you for your feedback!
>What it needs are more ways to develop character and
more interactions during the game that allows player to make some decisions.
There will be upgrades for incresing main stats (STR, DEX, INT) or/and choosing for feats (similar to dnd system). Also there will be quests, you already can take single one in the camp at 2nd char level.
>I got an error (something related to inventory)
Yeah, thats outdated save files.
>I hope for randomized levels in the future updates as well.
I'll see how to do it, never tryied it earlier, also I dig more for exploration, so preset levels would work for that better, but I do realize that it could get really boring over time, so I'm thinking on options like make generated mode optional, or make if for hardest difficulty that will be unlocked after beating all floors, and other thoughts.
Thank you for your encouragement words, I wish you luck too! :)