Thanks for playing and the feedback!
I've been thinking about some minor invul. too actually, will try it out and see how it plays.
The UI isn't final in anyway at all, a lot of people have had similar feedback as you about so I'll look into it. I'm a bit hesitant to add a lot of UI elements that can get in the way of gameplay, but again I might change my mind if I actually try implementing it.
There are a lot of small problems like with the laser that I just haven't gotten around to fix yet, but I will sometime!
About the ammo and runes looking similar, good point I'll look into it.
Yeah I'll improve on distinguishing the ammo types, probably change their names too...