Hints:

To cross some of the wider gaps in Chronicles, Lara now has the ability to walk a tightrope. To do so, simply walk up to the edge of the rope, and press Forward and the Action button. If you fall off balance press in the opposite direction to which Lara is swaying, and you'll be back to normal.

Lara also now has the ability to monkey-swing across barred ceilings. To do this, jump up and press the Action button to grab the bar. Then while still holding the action button, press Forward to move across.

Any time an enemy is about to appear on screen, or some sort of other impending danger is about to befall Lara, a musical cue plays immediately before. Keep an ear out for these, as they can help keep you from being ambushed