To get this trophy you must complete an entire level without hitting the square button...Period. No cutting up enemies, no saber throws, and
no QTE's that use the square button. I can not stress that enough - the droids that cover you in carbonite or flames must be defeated by force powers alone.
Your best bet is to replay the first level after you have everything maxed out. I also put the difficulty on easy just to burn through it quickly
. Using force lightning, push, grip, mind trick, and repulse are all acceptable.
Just stay away from the square button altogether. I made the mistake of initiating the QTE with the first carbonite droid I encounter and at the end of the level I got no trophy.
If you are having difficulty putting down the carbonite droids, here is a tip: once you have them stunned with the "X" above their head (to initiate the QTE), use a charged force repulse attack - it drops them 1 hit.
If I missed anything, or someone needs more detail on anything specific with what was stated above,please let me know in the comments below.