Hammerfight is a 2D physics-based action game where you control an aircraft with your mouse. Your aircraft can be equipped with various slashing and crushing weapons, which are all effective at crushing through armor and slamming them into a wall. There are a large variety of weapons to unlock, including swords, hammers, maces, and even guns. There is an extensive campaign and arena and hunt game modes.Go to: http://store.steampowered.com/ and download STEAM client
Click “Install Steam” (from the upper right corner)
Install and start application, login with your Account name and Password (create one if you don’t have).
Please follow these instructions to activate a new retail purchase on Steam:
Launch Steam and log into your Steam account.
Click the Games Menu.
Choose Activate a Product on Steam…
Follow the onscreen instructions to complete the process.
After successful code verification go to the “MY GAMES” tab and start downloading.