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