This might seem like something minor but here is my main feedback from beta.
The overall look and feel of picking up items off the ground, needs a bit of an upgrade IMO.
Right now the text seems oversized, the font is very plain, colors are a bit too bright, the look of the popup and the sound when you pick up gold feels corny and cheap. the potions on the ground look like mobile game item drops.
The items being all just plain rectangles in your inventory, they need a nicer feeling border to them and not such a blocky look.
Act 1 honestly felt kind of small and underwhelming and seeing the entire map laid out in a giant blob for all acts kind of upset me a little