Suitable for more those more experienced with ciphers and cryptography, and who are not afraid of a challenge. These ciphers are more difficult. Either they need some hard work to actually translate, or they need you to research a new type of cipher (Vigenere, or Playfair?) and they might not give you the keys. It's possible you'll have to actually do some real 'CRYPTANALYSIS' for the first time in this challenge.
Crack all four, follow the instructions, and come to CRYPTO HQ to open the Level 3 Treasure Box.