Up: Move up one square
Down: Move down one square
Left: Move left one square
Right: Move right one square

Middle Click: Center camera
L/R-Click+Drag: Pan camera (L-click interrupts movement)
W: Pan camera down
A: Pan camera up
S: Pan camera left
D: Pan camera right
Tab: Zoom in
Space/Home/End: Toggle camera following

Warning: Attacking too quickly can cause bugs (like attacking using the previous character's ability and then missing their turns)
1/4/Numpad 1/Numpad Enter: Select Skill 1
2/5/Numpad 2: Select Skill 2
3/6/Numpad 3: Select Skill 3

Sources: Trial and error
Icon Source: http://en.icône.com/tag-keyboard-0