I had a lot of fun with this. The NPCs and story got a few chuckles out of me, the whole thing reminded me of a 90's OVA. It was also charming that you could speak to your monsters and they'd reveal a small bit of their personality that way. I used Goblin, Water Slime, Goblin Witch, and Asylum Angel the entire game. Their abilities allowed for some pretty broken strategies like setting up regeneration + hall of mirrors + the aoe sleep move (I forgot the name) + mandrake to proc poison on everyone. I cheesed the last two bosses that way. There was one glitch(?) and that was the Asylum Angel only being able to heal herself in battle, even if using an item.
Here's a drawing of Lisa.