Upscale pixel size in unity free

I am planning to make a game for the GameBoy Jam, a game jam with a rule that limits you to 160x144 pixels for your game. You are however, allowed to upscale the window size of the game, provided the actual resolution stays the same. That means that the actual pixels are scaled up.

How would I go about this in Unity free?

Try to configure your textures filter mode as Point