t2’15 Challenge hint #4: If you failed to read the recipe …
t2’15 Challenge hint #3: What file format was invented on the date contained in the missile system decryptor?
t2’15 Challenge hint #2: If you modify the cookie you will notice that it contains padding.
t2’15 Challenge hint #1: One flag is unintentionally a little bit unclear. If you find a password on a level, its hash is the solution to the level.
We now accept few different hashes for one of the easter eggs. If you think you did find an egg but the hash got rejected, please try again – it might actually work now 🙂
Hat tip to Peter Kosinar for pointing this out.