Each machine is assigned a certain number of points depending on its difficulty level. You may earn points as you submit correct hashes for each machine exploited. The points logic is the same for both in-browser and VPN access.
Your points will be deducted if you use hints before you are able to submit all flags for the machine. If you view a walkthrough for a machine, your points will also be reduced to zero unless you have already submitted all flags prior to accessing the walkthrough. While we have established earning points for machines to build in gamification, we encourage you to primarily focus on your individual learning.