During your first sleep, you'll pick up your first rune. After the sleep, equip the heart and you'll find the optional rune down by the water front.
Now go back to outside the pub.
Save the game.
til you get to Powers,
Select Bend Time.
and hot key Bend Time and Blink
Make sure you have a full mana bar, if not, drink a mana potion.
Bend Time and then Blink, Blink, Blink in a straight line.
After a few secs the cheev should pop. If not, just reload the save and try again.
If you don't want the Bend Time power, just reload the game.