Musikus wrote:for crit shot target may:

run, but no sprint
walk backwards
move forward stealthed

for crit shot target may NOT:

be in combat
sprint
run with speed

Please note that critical shot will work against targets that are: sitting, standing still (which includes standing in combat mode but not actively swinging at something), walking, moving backwards, strafing, or casting a spell. Critical shot will not work against targets that are: running, in active combat (swinging at something), or mezzed. Stunned targets may be critical shot once any timers from active combat have expired if they are not yet free to act; i.e.: they may not be critical shot until their weapon delay timer has run out after their last attack, they may be critical shot during the period between the weapon delay running out and the stun wearing off, and they may not be critical shot once they have begun swinging again. If the target was in melee with an archer, the critical shot may not be drawn against them until after their weapon delay has run out or it will be interrupted