Ohhhh, i think you missed the idea that your supposed to spam the gun and use it as a machine gun or shotgun of sorts. Yes it is not very good at aiming, but at close range you can shoot many close range quick bullets to get rid of the lack of control. Maybe it was the mistake of the tutorial for not teaching the idea well enough.
For healing I definitely understand that, I havent really found a way to stop the ´heal orbs´ going into the wall. If more people complain about this healing mechanic, ill think about modyfing it to make it less punishing.
Thanks for the advice!