Rotten simply required you to use a caesar cipher to decode the text it sent you. Luckily, once decoded, all the text contained the word send
and this allowed us to filter out the correct shift.
This challenge wasn't really anything special, just automate the process of fighting bosses until you have enough money to get a new weapon, rinse and repeat until you get the "tank" which can defeat the gnomes, when you do that the flag is printed.