Some tips for you all:
Always buy from the shady merchant hiding next to the inn. Even if you don't like it, the items resell for a tiny bit more than you paid.
Shiny spots on walls are entrances to a room with an artifact chest and a journal entry that provides some story to the cave.
CTRL key saves the game so you can continue from the same spot where you saved in the cave. This come in handy if you need a break but don't want to use the wings yet.
M and 0 keys mute and unmute the sound.
The transmute spell is your friend. It allows you to keep any item as if it were an artifact. You need to unequip an item first to use the spell on it.
Potions can be crafted anywhere and cost no mp. The forge is only needed for equipment.
Telekinesis is handy to grab any last minute chests before you return to town.
You can see a monsters stats without attacking by holding the left mouse button down.
While the aiming was very awkward at first, I found myself playing it all the way through and is not bad. After you level up the gun changes which makes it a tad easier, but still more than difficult enough to be a good challenge. Not sure if its a bug or not, but I'm on exp 19379 / 13500 on level 5. :/