Falkrin's page

Sneak action:
Success: You're undetected by the creature during your movement and remain undetected by the crature at the end of it. You become observed as soon as you do anything other than Hide, Sneak, or step. If you attempt to strike a creature, the creature remains flat-footed against that attack, and you then become observed. If you do anything else, you become observed just Before you act unless the GM determines otherwise.

Unless there is an errata that I am not aware of you can strike your foe and get the flat-footed condition at least.

As far as I understand the stealth rules you will not get detected if you make your stealth roll and end your move in cover or concealment.

That means that you can stealth up to a foe and get him flatfooted provided you can reach him in 1 move action (or manage to end each move action in cover on your way up to your foe)