Extremely glitchy. I got the hard badge by killing the first swordsman in normal mode. Could have some improvements, like changing the fact that he walks backwards to the left except when there are enemies. Still, 3/5.
Let's clarify a few points.
The queen shows up randomly at the end of the nest. The Razor Queen does the same when you have got all the things in the bestiary. The Razor Queen can't be combined.
 "Amorphous+"){kind=icon}
 "Achilles"){kind=icon}
 "Kongai"){kind=icon}
 "Hedgehog Launch"){kind=icon}
 "Monsters' Den: Book of Dread"){kind=icon}
 "Bubbles 2"){kind=icon}