Originally Posted by DArtagnan
IIRC, the RPG mode is about dialogue selections. As in, if you play in RPG mode - you get to select how you respond to NPCs.
Not sure if there are more differences.
ME3 is 80-90% about shooting enemies in very, very similar setups.
Well, at least based on the ~20 hours I managed to play it. That was on my second try. First try - I gave up within 10-15 hours - but I was lured into trying it again by some heartfelt praise. It's a subjective thing, obviously.
I know there are big fans of the game on this site - so maybe they're the ones to ask if you want to be encouraged to stick with it.