I’m not going to write this as a typical walkthrough. Since it’s a point and click game, I’m going to list what you need to do for each thing, rather than the exact dialogue choices you need to make when you’re given a chance. I highly suggest clicking on random things anyway, just to hear the dialogue.
It’s in the order that I did those things when I played through the game, though several can be done earlier or later with no penalties of any kind.
Save Fiona
Fill the whoopie cushion with punch and throw it on her
Doc
Have Jane protect Doc with her umbrella
Then have Homes pick up the ax and chop down the post
Frank
Get pumpkin seeds and throw them on the bananas
Fiona
Take the blanket from on top of the filing cabinet and give it to her
Bram
Tip over the closest barrel
Doc
Offer to trade for the handkerchief
Get pumpkin seeds, dye them green with punch and give them to him
Alternatively:
Convince him to let you borrow the handkerchief
Frank
Offer to trade for the voice changer
Get a recipe card and give it to Tressa to draw and give the resulting picture to Frank
Alternatively:
Offer to trade for the voice changer
Help him with his romantic poetry
Bram
Pick Holy Water
Get a glass of water and put cheese in it and give it to him
Alternatively:
Pick Garlic cross
Listen to Bram’s instructions quite thoroughly and make a garlic cross and check with him
Put the voice changer and handkerchief with the costume, and have Homes change into it