I'm really astounded by how many people can't figure out the controls, though I do admit they are unconventional. That said I can do whatever I want to with the keyboard and I wanted to put movement on the left and other actions on the right. I need eight action keys. Do you see anywhere else on the right side of your keyboard that would be better than the numpad for this?
If you can see what color something is then, unless your shooting for something almost out of view, you should be able to know what it is.
Yes I playtested on other people. Nobody had a problem(they knew how to read and use a keyboard and mouse). What's wrong with Shift and Ctrl? What do you suggest in place of them? I used the numpad for default controls. Why can't you have a menu? Because I didn't make one.
The mouse is just for the title screen. I assumed that wouldn't be confusing but apparently that's quite the concept.
EDIT: Typo.