Hey!
Not sure if you competed this yet.
1. It's okay if Fredrick is already dead(i had to kill him because he attacked me). After killing Fred, I was able to go back to the Imp and a new dialog pops up. It's the one that isn't "tell me about yourself". So click the new dialog, he'll say he's scared or something~ then the dialog flips to you talking to your buddy. One choice(top choice), is feeling bad for the imp, then you agree, which gives you 2100exp, and then a choice pops up to give him the potion and you'll get an additional 4100exp. The other choice(bottom choice), be an arse as tell the imp to man up. You dont give him the potion and you walk away with only 3100exp.