Yes you read it right! now you can play Hotline Miami 2 on your old PC which is running on Windows XP.
How ? By using Unofficial Patch posted by a user on steamcommunity .
The instructions recommend that the game be run in OpenGL mode rather than DirectX 9, which can only run in borderless windowed mode and is apparently very crash-prone. The patch will also have to be re-applied every time the game is updated.
Follow this link for all instructions and issues Unofficial patch.