It's a solid game, though I couldn't figure out how to get the 'good' ending, assuming that's not what the 'secret' ending is. I got both the bad and secret endings. I used up all the potion vials too, but nothing happened. I fed people chaos potions, poison, and I even fed someone the cure potion. Overall, I think you did alright. (Also, the button to skip the dialogue was 'Q', not 'A'.)
Hopefully this gave you the experience to make your next game even better! Keep trying.