I tried using mines since I focused on mirrors. I’ve managed to murder myself 3 times with the tier 3 mines. The first time I didn’t even realize I was injuring myself.See, I've never really had that experience because most things can be outrun. Picking up the mines for your rear weapon works well, too - the only time I fight is when I must for storylines, or a few of the weaker enemies that reliably drop useful goodies. But running away and dropping a stream of mines to discourage pursuit works nearly everywherr.