When I go into a sub-menu such as controls etc. the menu becomes unreadable and I can't actually use any of them. Maybe this is just because of my terrible laptop, but I just thought I'd mention it.
Another problem I seem to be having is that I can't jump...I think the standard control is the space bar, but either way I can't actually check because the menu is weird.
Apart from that movement, shooting etc. works fine. I'm dying to be able to play this properly.
