Colonist Full-stack Product Developer interview questions

The interview process involves a take-home assignment given in a JSFiddle link with some requirements mentioned in a PDF file. The skeletal code needs to be revamped based on the requirement to a working model. Expect the feedback to be completely vague. They will tell us to make assumptions and provide the necessary explanation, but would never really give a solid reply to any queries you ask about the assignment. Its upto you to understand the requirements on your own and make those assumptions. In the end, even if you give your hard work and give a solution which passes all the requirements, they will give a vague feedback not mentioning what exactly was missing. (In my case they said my final design was not similar to the original requirements, which i was not able to verify properly to get to know exactly what i was missing). In the end they will ghost you after this vague feedback, even if you try to get a proper feedback for the assignment. I did not learn anything from this assignment task and overall i felt it was a waste of my time and resource. At least a solid feedback about what I was missing would have helped and improved the interview experience.