I haven't found them too hard, the key is libra, and a defensive ploy. The only annoying thing is that they do take me much longer than the reccomended times, so my 0 stars is not satisfactory after such a hard gruel
That boss with 3.3m HP that the OP is talking about, it took me 22 minutes to beat, as I just had to stick with delta attack, with regular trips to combat clinic







