Hotline Miami has been updated to add gamepad support.
The developer noted that you'll need the newest drivers for an Xbox 360 controller to enable this feature. These can be downloaded here.
Unfortunately, to disable gamepad support you'll need to switch the controller to "off" in the options menu and restart your computer. "Otherwise the game might run with a small but constant slowdown until you do so," said the developer on its Steam page.
Elsewhere, the update adds the bonus "Highball" stage, which is unlocked upon completing the game.
The update also increases randomly placed weapons, modifies boss behaviours, and the Jones mask's "more gore" perk has been enhanced to include additional graphical effects.
You can see the Jones mask's original extra gory deaths in the video below.