How difficult is it supposed to be to hit these guys? It doesn't seem a case of just getting behind them. Most of the time I kill them it just seems to be one lucky hit out of a bunch of blocked spam. They also seem to block "mine" type attacks that basically detonate inside them. Even worse, they sometimes seem to one shot kill me (10 hearts), usually when I am touching them. However, this doesn't happen every time (usual brush with them is 0.5 hearts). Anyone else finding strange issues with this enemy, or is this all intended behaviour?