Upon completing your mission, you will be awarded a codename. There are 48 in total, and here they all are, along with the requirements. Imagine if you had to then take the name you'd earnt and be called by it next time you played - could be quite embarrassing!
| Easy | Normal | Hard | Extreme |
Rank 1 | Hound | Doberman | Fox | Big Boss |
Rank 2 | Pigeon | Falcon | Hawk | Eagle |
Rank 3 | Piranha | Shark | Jaws | Orca |
Rank 4 | Pig | Elephant | Mammoth | Whale |
Rank 5 | Cat | Deer | Zebra | Hippopotamus |
Rank 6 | Koala | Capibara | Sloth | Giant Panda |
Rank 7 | Chicken | Mouse | Rabbit | Ostrich |
Rank 8 | Puma | Leopard | Panther | Jaguar |
Rank 9 | Komodo Dragon | Iguana | Alligator | Crocodile |
Rank 10 | Mongoose | Hyena | Jackal | Tasmanian Devil |
Rank 11 | Spider | Tarantula | Centipede | Scorpion |
Rank 12 | Flying Squirrel | Bat | Flying Fox | Night Owl |
In ranks 1-7, you have to achieve a certain task in order to be awarded a codename. Here are the requirements:
