Here is the full list of all 20 Twin Robots (EU) trophies - there are 4 bronze, 6 silver, 9 gold and 1 platinum.
Perform 10 consecutive wall jumps
Both robots die smashed together
Die 5 times inside an acid pool
Press the red button at the last minute, just before your twin gets crushed
Jump 75 times in one level, using the same robot
Finish level 2 with both robots alive
Share energy when your twin is about to die
Finish a level using only 1 robot, not switching control even once
Reach the exit with both robots
Step on all of them in one level
Give all your energy to your twin
Unlock all other trophies
Die on the spikes over 25 times
Finish all the levels
Finish level 22 with both robots alive
Finish all the even levels with both robots alive
Finish all the odd levels with both robots alive
Finish all the levels with both robots alive
Collect all batteries across all levels
Run against a closed door