The gameplay is dynamic and the level settings are inspired; it does not feel like you're infiltrating generic terrorist bases, but trying to hit your target in a relatively mundane setting (like a secure rehab clinic or secluded villa). And despite the domestic settings, you still need all your skill to out fight and out smart dozens of security agents in each successive location).
The best level I played so far is "Flat Line" where you have to enter a luxurious rehabilitation clinic that has unusually high security and grubby little secrets hidden by both patient and doctor alike. You'll have to extract a undercover agent who's confined in maximum security medical block, plus bump off three powerful Mob figures who are are "rehabilitating" themselves at the luxurious establishment.
Security is very tight with the clinic grounds patrolled by private security officers and the Mafia people watched over by their own henchmen. You'll have to use subtlety to get in there and take them all out - often by disguising yourself or rigging up things to kill your intended target (like lacing their hidden bottles of booze with poison or dropping a chandelier on their bonce).
It's a fun game.
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