If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Resort Siege, the city has been taken over by a hostile army. Control the home guard to destroy the baddies and reclaim the streets. Baddies will only fire t you if they can see you. Collect stars to upgrade your troops. Loss of civilian life will incur cash penalties. VIP's must be saved to complete the mission.
W,A,S,D - Move.
Mouse - Aim / Shoot.