Metal Gear.

Tenchu.

Assassin's Creed.

Splinter Cell.

These are all great examples of stealth action games, and Stealth reminds me a great deal of the first two titles.

Stealth is top-down, slow-paced, your inventory can be quite limited, and to succeed you'll need to figure out the patterns of the patrols of the guards.

Here's a sneaky early look.