Technology How technically impressive was the hack? Was the technical problem the team tackled difficult? Did it use a particularly clever technique or did it use many different components? Did the technology involved make you go "Wow"?
Design Did the team put thought into the user experience? How well designed is the interface? For a website, this might be about how beautiful the CSS or graphics are. For a hardware project, it might be more about how good the human-computer interaction is.
Completion Does the hack work? Did the team achieve everything they wanted?
Learning Did the team stretch themselves/try to learn something new? What kind of projects have they worked on before? If a team which always does VR projects decides to switch up and try doing a mobile app instead, that exploration should be rewarded.
Accessibility Did the team take into account accessibility? Is there contrast with colors used, is the text legible? If the team wasn’t able to implement any accessible features, did they address any future implementations in their presentation?