I just beat the first boss again in Insane Mode. Yeah, it's a difficulty level, big whoop. Although I must say I'm not finding it much harder so far. It's like...they leveled up the enemies to what they thought you'd be at the end of beating it the first time. So far, it looks like it. Although I'm sure this is just the tip of the iceberg.
Also got all the Animals. Yeah, now all I need is 2 more for K.I.S.S., the ranked achievements (oh boy) and Medic (ugh). The mini-games were a nice touch, but suck. I'm probably going to max out my Orange Knight and maybe start another character. Maybe...Green Knight.