Here is the full list of all 21 Scram Kitty DX trophies - there are 21 bronze.
Clear 'Approach 4' in under 9 seconds.
Finish 'Docking Bay 2' in under 20 seconds.
Clear 'Docking Bay 3' without touching any special rails.
Collect 25 golden pennies in 'The Vents 1' without shooting OR fire jumping.
Clear 'The Vents 2' without Fire Jumping.
Defeat the Mouse Commander and collect the Black Cat in just one encounter, in 'The Vents 5'.
Clear 'East Wing 1' jumping fewer than 10 times.
Clear 'East Wing 3' without collecting a single Golden Penny.
Clear 'East Wing 4' without collecting a single Golden Penny.
Clear 'East Wing 5' in under 90 seconds.
Clear 'Engine Rooms 1' in under 30 seconds.
Clear 'Engine Rooms 2' without collecting a single Golden Penny.
Clear 'Engine Rooms 3' without jumping a single time.
Clear 'Engine Rooms 4' without collecting a single Golden Penny.
Clear 'Engine Rooms 5' jumping fewer than 5 times.
Reach and defeat the Mouse Commander in 'Test Labs 2' without firing a shot.
Collect the White Cat in 'Test Labs 3' without touching any special rails
Clear 'Test Labs 4' in under 30 seconds. You need to get to that laser quickly!
Clear 'Test Labs 5' without jumping even one time!
Finish 'The Energy Core' without taking any damage.
Do 12 Fire Jumps in 10 seconds.