Quantum of Solace Walkthrough

Once the door blows open, make sure to loot again, since you can grab an SAF 9mm ARO Scope before you leave this room. Heading down the hall you'll notice some red flashing lights just before some mines go off as Mitchell heads through a side door, but the effect is mostly atmospheric.

The only problem is that shortly thereafter everything starts collapsing, and a timer kicks in. Shoot a guy in the face. Then you'll need to do a quick over-under move: rubble falls, so you hit Y to climb over; more rubble falls, but clearly this time B to duck is the right move. After that you end up at a ladder and are pretty much home free...

...to the street, that is. Your position behind a potted plant is one to be vacated as soon as possible. Head to the first watermelon crate. This fight is not terribly tricky, but you need to keep active or they'll start throwing grenades.

The guy up in the window is just obnoxious, so take him as early as you can. Another useful early shot is the tank on the right. If you pop it early enough, it will keep another guy from waltzing out of that corner, even though it only stuns the one already shooting at you.