So, I played the game, completed the first level, then got to the second one and got stuck on the boss. I kept running away from him and shooting, but it didn't seem to work that well, cause it went on forever, so eventually I got bored and closed the game. Also, maybe the spell he spams not only burned my character's mana, but also healed him, there's no way for me to know, cause I don't see the health bar.
A big issue I had with the game was that instead of shooting the enemies, my character would often run towards them, cause I mis-clicked. It also happened in Diablo 2, but not as frequently, and it also had an amazing feature to mitigate this: if you held a certain key, the character would stop and fire wherever you were pointing. Very convenient. Actually, nevermind, I read other people's comments and learned that you can use Shift for that, and it does make the game a lot more enjoyable, but the help menu doesn't say anything about that.
Similar problem with picking up items: instead of doing it, the character just runs towards them and stands. Especially annoying in battle, when you try to move potions from inventory, you start dragging them outside of it, and usually they just end up on the floor.
Also, the game runs like ass on my machine for some reason.