Here is the full list of all 25 Cloning Clyde achievements.
Become a Mutant-Clyde.
Complete levels 1-24 and 10 Challenge levels under par time.
Ride a sheep in the cowboy outfit
Complete all of the Challenge Levels.
Win the game!
Destroy 100 secuirty bots
Collect all of the cloned Killer Kenn Action Figures.
Clone yourself 50 times
Run in wheels for 30 minutes (cumulative over a level, but not the game.)
Collect 100 of the cloned Killer Kenn Action Figures
Exit 75 clones through the ventilation shafts.
Destroy 50 security bots
Confuse clyde with extraneous input 15 times
Collect 50 of the cloned Killer Kenn Action Figures.
Become an Ape-Clyde.
Destroy a security bot with a rocket
Rescue 40 clydes
Clone yourself 25 times
Become a Frog-Clyde.
Super attack five machines
Become a Sheep-Clyde.
Destroy 10 security bots
Become a Chicken-Clyde.
Ride a rocket
Rescue a clyde