I thought it would be on pc at eurogamer as it was pre alpha. I only get screen ripping when there are loads of things on screen at once.... like 5 titans and loads of people lol. It is proper manic. Like you say the grunts are far too easy. Most people arent new to fps now so it doesnt need to be that easy. Could become boring for long term use if you are quite experienced in the genre.
I have spent a good few hours on the two maps and I still look forward to going home from work to give it a blast lol