Gave this a go, found it to be very interesting (and overly sexy). Sometimes I'll get 2 of a special item if I lose to a miniboss and then beat it, playing 3.3c. (so yeah, I can comfirm Purp13's error) Also, not sure if this is an error or not, but just before you challenge Little Webby, there's a monster near the exit. It was a silk worm, fled from it, it caught up to me again then it was 3 spider gals.
Definitely a fun little game! I would have thought that the Slime Queen would have had a slightly different slime attack but other than that very enjoyable!