Stalkin are basically a smaller version of the Stalfos. They usually attack in large numbers, surrounding Link. Because of this, the best strategy to killing them is to use Midna's Charge Attack while in Wolf form, which kills them all. Alternatively, Link can stab them with is Sword while in Hylian form. Additionally, the Spin Attack in Hylian form can also be effective. They pop out of the sand, and only come up if Link comes too close to them. They can be quite challenging in large groups, but are fairly easy if in small groups.
Stalkin as they appear in Twilight Princess