The levels generally allow some degree of non-linearity in approach and blend the stealth and shooting elements smoothly. The early levels are less impressive, heavy on action and dimwitted opponents. Later though, the gameplay fleshes out and you are required to use some genuinely enjoyable sneaking skills and thwart some crafty mercenaries. One level has you sneaking through a high-security office building, hacking computers and averting laser tripwires; another has you infiltrating a high-security underground base through ventilation shafts and camera-guarded corridors. These levels work so seamlessly because they allow some creativity in their approach. In the office level for example, you can either try sneaking past laser tripwires (using your cool Bond sunglasses to see the lasers) or try to find a way to disarm the system. Often, you can avoid confrontations almost entirely with a little resourcefulness.