List of Hackers and their level:

Level 1 - Zombie 101
Level 2 - Dude 27th
Level 3 - bone tail
Level 4 - Zefennekinfan
Level 5 Zombie 101's big brother
Level 6 - Maelstromof Chaos
Level 7 - Izzy Glow
Level 8 - Silver exe
Level 9 - Gary

Credit Level - Zombie 101 and Zefennekinfan

A big Thank you to the ZAMN Community, for pushing Zombies Ate My Neighbors way passed 
it's possibilities and making the impossible Possible. It is incredible what we have done and how far we have come!