sfh 2 is undeniably the best, but I enjoy the weapons in sfh 3 more overall. This is mainly because I feel that the fire rate of AR's sfh 2 is way to slow.
in the beginning the placement of the buttons in the university threw me for a loop and I upgraded the wrong things. this is not the fault of the dev, just pay attention to what you are doing and look closely.
especially when you start getting runecrafters. I'm at -2.5 gold a second making it really hard to save up gold. A bigger house after castle would also be really nice.