"You can't go back to being a human anymore, you are not one. You are a vampire. Now that you are a vampire, you need allies in the supernatural world, since vampires are supernatural, and you are a vampire. Do you now see why you, a vampire, need my training, as a fellow vampire, which we both are?"
"Hey, I didn't ask to become what I am, which is a vampire. A vampire did vampire to me against my will to make me a vampire, which I am but did not ask for."
Do note that to get the easy badge you don't need to be using a poison mage (which early monsters are pretty consistently immune to), you just need to give them the infection upgrade.
I wish you could make progress for later levels. I got a 10x combo on level 2 with a score of 12622 and now on level 4 I have to get another 10x combo and make a tower of 200.
 "HKEJ GAME"){kind=icon}
 "Siege Knight"){kind=icon}
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 "Zombies, Inc."){kind=icon}
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 "Let it Glow"){kind=icon}
 "Monster Bark"){kind=icon}