You must have found at least ONE of 11 DIFFERENT CACHE TYPES.
Qualifying Criteria and Supplying Proof
All of the challenge criteria for qualifying for this cache can be found on YOUR Geocaching Statistics Page. Easy! Your Stat Page is the only place you need to reference to see if you qualify, or track your progress towards qualifying, for all these caches.
To provide proof: include a screen-captured image of the portion of your stat page that substantiates the criteria on your find log.