So, since I'm fairly familiar with the game and had already played though a large chunk of it on the PC, when I started the 360 version I figured I would play it on Insanity for a bigger challenge and of course so that I can get the achievement. Well, it turns out that this was not best idea in the world as in Insanity difficulty, even the most basic of enemies have some sort of protection (whether it's armor, shields, or barriers, or a combination of them) which made the early parts of the game a long grind, even when starting off at Level 5 Sentinel with an imported character. Also ammo can be a major concern in certain situations (especially hand gun ammo) since you can't really risk being out in the open too long grabbing ammo (you die in just a few seconds if you leave yourself exposed in Insanity difficulty).
 
Now since I'm playing Sentinel and have been using tech armor graciously, I've only died a few times (mostly when dealing with Scions) but the battles still can take three or four times longer than it typically took when I was playing Normal on the PC. My teammates aren't much help either aside from queuing up their biotic/tech abilities up (as they tend to spend prolonged periods of the time shooting exposed at the enemy rather than staying in cover, which equals a quick death on Insanity) though I did level up Grunt's inferno ammo to squad inferno ammo, which really was quite useful (since it still works even if he dies). I wish there was an option in the game for teammates to just stay in cover unless commanded otherwise as this would have saved me a lot of hassle during a few of the battles.
 
Another thing that was really annoying (minor spoilers follow, not plot related) was fighting the part when you fought the damn Scions and a whole bunch of hunters followed by a Praetorian boss fight. Now this wasn't so bad on Normal, but on Insanity it's a big freaking nightmare, if you're not lucky or don't know exactly how to approach the situation (which is to run around like hell hoping not to get mobbed by hunters while Scions are constantly firing shockwaves at you--my teammates died about thirty seconds in to that fight). I'm definitely not looking forward to that one particuarly fight (minor spoiler warning) aboard one particular collector ship later on in the game.
 
To illustrate how much longer battles are taking, I'm about 12 hours in on my first play through on the 360 version and I've only done two loyalty missions and recruited five teammates, whereas I'm about 16 hours in on my PC play through and have already completed all the loyalty missions for all the teammates except Legion. Also there isn't much room for even minor mistakes (in one situation I accidently pressed forward + A instead of just A and ended up leaping over the cover, instead of backing away from it, and died almost instantly from a shower of missiles--which caused me to lose about half and hour's worth of gameplay time)
 
Still, on the positive side I'm enjoying the battles quite a lot as they require much more strategy than on the easier difficulties, becoming less of a shooter and more akin to action-RPG-style combat. So as long-winded as the fights have been, they are still, for the most part, enjoyable. Though my chances of a quick first playthrough on the 360 are definitely down the drain (I'm predicting probably a 40 to 50 hour first play through since I do plan on competing all the side missions)
 
Anyway that ends my long rant. Time for me to go to my next class . . . :P