Defeat 50 enemies as XLR8.

Defeat 50 enemies as Shocksquatch.

Unlock Arctiguana.

Defeat 50 enemies as Bloxx.

Defeat 50 enemies as Eye Guy.

Defeat 30 enemies as Young Ben or Teen Ben (not in alien form).

Defeat 20 enemies as Young Ben or Teen Ben (not in alien form).

Defeat 50 enemies as Wild Mutt.

Complete an entire level without being defeated and reset.

Defeat 50 enemies as Cannonbolt.

Escape from Malware... for now.

Defeat 50 enemies as Four Arms.