Started PS3 version digital. "Hero" difficulty (chosen as I finished the trilogy a few months ago).
Restarted afresh after dieing 6 times on the 2nd planet. (Adjusting to camera rotation speed, new mod heavy/focused weapon system and the importance of the mini-map.)
Restarted afresh again after dieing on tutorial (adjusting to slightly different jump controls).
Third time starting went through with after deleting these "practice saves". Got first 2 trophies towards Plat.