While playing through Greedfall you will run into quite a few side quests. Some of these quests can’t be missed but others will be hard to find. Check out this Greedfall side quest guide to find all of them.
Greedfall Side Quest Guide
Serene Side Quests
If you help him leave the city, you will have to sneak him out discreetly. First go down the hall from his room and grab the store room key on the table. Now go downstairs and open the door to the kitchen, the door to the right of the stairs. Open up the store room with the key, loot the crate for the service key, and then open the service door. You can then try to calm down the townsfolk outside, which I failed. It isn’t a big deal, you just have to do more fights while escorting the Alchemist. When you get him back to his cart you will get 80 gold for your trouble. When you return to Lord Sahin, you can confront him about his lie to lose rep or ignore it to keep it even. You gain one rep for completing the quest and 50 gold as well.
If you arrest him you will get Bridge Alliance Reputation +3 and 150 Gold.
You can also offer him a bribe if you have 1 Intuition. He will agree to your terms, you don’t have to pay him, and you gain one rep with the Coin Guard. ..
If you just want to bust his skull you can threaten him as well. Go behind the merchant’s stall and you will fight some thugs and him. After beating them down the Merchant will ask for forgiveness and promise to deliver the goods. You will lose one Rep with the Congregation of Merchants.
from GamersHeroes http://www.gamersheroes.com/game-guides/greedfall-side-quest-guide/