It was a really nice adventure to complete all the 6 sets. Learned lots of useful stuff. My great thanks to tptacek and the team who prepared such a nice hands-on crypto class.
P.S. 7th set is insane (in a good way).
The 8th set ends in an elliptic curve attack that (a) is useful in the real world and (b) only one person I know has been able to implement. It is amazing.