I would like to verify Mika's observations. Autoaim does indeed appear to be always on regardless of the Config setting.
I also adjusted the Stick 2 values to X=2 Y=3. I believe this matches my gamepad configuration. I received the same results, manual aim only appears to fire Up, Down, or Backward. Never Forward or inbetween.Edit: Fix for Manual aim!
I'm not entirely sure what's going on here because my Windows 7 control pannel is missing Gaming Options, but I got manual aim to work.
I'm using
XBCD v1.07. By default the right stick X axis is set to RX while most joysticks i've used in the past use Z. On the Xbox tab I set the Right Stick X values to Left = Z-, Right = Z+. On the Windows tab I made sure that Z and RY are enabled and register input. In Aquaria I set Stick 2 values to X=2 Y=3.
Either Aquaria doesn't poll the RX value or I just can't figure out what number to put for it. Either way, this should work if you're using an old Xbox controller and XBCD. If the drivers for your gamepad allow remapping the stick axis a similar procedure should work for you.