The Answer, in Python

import string

def next_letter(index):

  letters = string.punctuation + string.ascii_lowercase + string.digits

  return letters[index]

def main():

  response = ""

  index = 0

  orders = "36,13,-9,-6,8,8,-4,-1,9,-18,-3,17,-10,11,-15,\
-23,21,12,-2,-30,18,22,-18,14,-4,-2,-8"

  orderArray = orders.split(',')

  for order in orderArray:

    index = index + int(order)

    response += next_letter(index)

  print (response)

if __name__ == "__main__":

  main()