TheUnusualSuspect wrote...
Watched the Jack video. I just got done playing Vanguard. Am unsure what I'm doing wrong, 'cos as soon as my Shep pokes his head out, every single opponent on the map starts firing at him, even ones that aren't in target-box range. There were numerous times in your Jack recruitment video where you were in wide open view of opponents, and they had their backs to you, or where firing elsewhere. Wish my opponent AI acted the same way, 'cos it sure doesn't at my end.
Ememies love Sheppard and they do fire at my Sheppard the moment I leave cover. The trick is to plan ahead. All enemies that can fire at you should die seconds later (or you'll die). If you watch the first fight of the Prison Break video, you'll notice that I wait before charging for the first time. Just long enough to be sure to kill Shep's first victim and to get cover immediately. The second charge is risky, I had to kill the remaining 3 enemies fast. They immediately turn towards Sheppard the moment she jumps into the fight. I had to charge a third time to restore (half) my shield to prevent dying. The fourth charge prevented the enemy allready halfway in the room from firing at Shep cause the line of fire is blocked. If you want to play aggressively, you'll must learn when, where and who to charge. The moment you get some feel for it enemies can't catch you.
There're some great Vanguard guides around to give you more information about this. Basic rules are charge enemies that are separated from their buddies (easy kills) and always look for cover (there is always some sort of cover around). Vanguards can take some damage and their shields are (partually) restored after every charge (charge is great when used offensively (killing stuff), but equally useful defensively (staying alive).
Enemies always target Shep whenever possible, but if Shep is out of range (cover) they'll attack the nearest squadmate. Use your team to your advantage. Fighting an agressive enemy like the first and the last Prison Break fights - put your squadies somewhere safe to keep the enemy occupied (and your squad alive). Remember that you can use the Q and E (default PC) buttons to not just move them around, but also who to attack. During the two Mech fights (Prison Break) I immediately command Miranda and Jacob to attack the Mech to distract it. You'll notice that the Mech turns its attention elsewhere the moment Shep is in cover.
Another useful command is the C (default PC) button to command your squad to rally to Shep. If you look at the last scene of the Insanity Craziness vid, you can see Jacob popping up out of nowhere (I pressed the C button a couple of times when I was deep into enemy territory). This happens quite frequently. The AI can't keep up with a fast moving Vanguard and if Shep gets to far ahead your squad will just spam out of nowhere.
The most important thing you'll need to remember about squadies is to put them in a good defensive possition at the start of a fight. And when your Shep is saying hi to the enemy, command them to advance (C button). The enemy is caught in a crossfire and they'll have to choose between targeting Shep (to be annihilated by your squad) or to face your advancing squadies (and they'll be massacred by Shep).
Hope this helps and remember that the Insanity Craziness is pretty extreme - don't try that at home

you'll die alot.