The Amateur Alchemist is one of the side quests you can do during your stay at the Roseway. It is about an experiment conducted by Vaughn. This page of the guide to The Outer Worlds has a walkthrough for this quest.
List of objectives
- Take care of the abandoned experiment;
- Talk to Vaughn.
While you are in the Roseway, you will encounter a scientist named Vaughn. Talk to him, and he will tell you about the experiment that he had to abandon. The man will ask you to complete it. If you agree, the quest will be activated.
The whole project took place in the secret laboratory (it is also connected with The Doom That Came to Roseway quest). To get there, you have to defeat a group of outlaws and robots (unless you defeated them already during your previous visit here).
Vaughn's office is across the place where Cassandra O'Malley is. Go inside and approach the terminal. Use it to complete the project. This will happen no matter which option you chose.
Finally, go back to Vaughn and tell him that the experiment is complete.