This is the full version of the game for Windows. Java 7 is required. Just extract the .zip file somewhere and run Roguelike Runner.exe
If a Roguelike and a Runner had a baby, that baby might play this game. Run from the knights as you venture deeper into the forest. Fight monsters; open chests; drink from fountains. Make it far enough and you may even find a shrine which holds the power to defeat the knights! Or just hug trees. You know, whatever you're into.