Need help with Controls

[Grolarbear]

When I moved the camera to the left or right using the arrow
keys and then started to move, my character used to go in whateve
direction the camera was facing, but now, for whatever reason,
my character does not change direction when I adjust the
camera, and I can only turn them with the A and D keys. What
did I do, and how do I return this to how it was before? I already
tried to reset controls, but it didn't change anything.

[ThrillexForLife]

Do you mean the regular camera when you appear to FH and everything is normal?  Okay..Just simply press F2. Hope this help.

[Ruby1234]

You switched the running mode. This can be changed by pressing the Ctrl key on the right of the keyboard, near the arrow keys.
It can also be changed in a menu;
Options >> Interface >> Running Mode >>
and then un-checking the "Relative Mode" box.

[Soulsplosion]

^ Yeah right ctrl changes your 'run mode'.
there are 2 kinds, I don't know their names but one of the goes in the direction related to whichever way the camera is facing and the other one goes in the direction in relation to whichever way your character is facing and spins with the A and D keys. (disappointing warning: People do /not/ see when you're spinning. ;-;))

[Feareh]

Here is the Feral Heart manual if you want a broad knowledge of how the controls work:
Basic Game Controls