These may not be in the hacking FAQ yet (but should be added): on Newgrounds/MFZ, it's a commonly used trick to replace an easy to achieve medal/achievement with a hard to achieve one - i.e. you get the hard one awarded instead of the easy one.

In this case search for the AoB that matches an easy medal/achievement (such as die once, or view credits) and replace with the AoB of a difficult one (e.g. beat game without dying).

So in this case, search for ring 1 complete: 2c bb 0c
And replace with the code for whichever badge/achievement you need, e.g. for Explorer you replace with 2c bc 0c