It can't be this difficult...

[Blacstar]

Or is it so dumb simple that I don't know what I'm doing?
How do I get any projectile to face the direction its being fired in?

[DavidN]

If you're using the "Launch an object" action, the projectile should automatically face the direction it's fired - if it doesn't appear to, check the object's animations (and right-click and use "Create rotated directions" to automatically draw the 32 directions from one source direction).

[Blacstar]

Sir,
you are a gentleman, and a scholar. This did the trick. Thank you VERY much.

However, no, it did not automatically face the direction. I had to create the correctly angled sprites, after which, it worked. And I was really happy. Really happy.