| Unlockable: | How to unlock: |
| Carrion carcass | get a bronze or better in the challange Rare or well done. |
| Brains | get a bronze or better in the challange brain drain |
| Elite henchman | get a bronze or better in the challenge melon heist. |
| Mischief | get a bronze or better in the challenge brass monkeys. |
| Insetick Sk/10 | Complete elite league with all golds. |
| Private jones | Complete level Something to crow about on nomal or hard mode. |
| Goddard | Get a bronze or better in the challange come hell or high water. |
| Badass cyborg | Get a bronze or better in the challange balls of steel. |
