The problem is that I'm not using any fonts, It's just images of letters that are being rendered. After some googling it may be a graphics card issue with love2d 0.11, which is sadly out of my control until they fix it. I hope it isn't too much of an issue.
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Thanks for the feed back!
The character's sprite direction corresponds to where the controls move him, which is why I only made 4 directions for the sprite. I can understand there still being some confusion about it though, so I'll consider adding something to make it more clear.