Serpent's eye/Warrior's eye
Serpent's eye was played in series 3-6 and Warrior's eye in the ninth and tenth.
Hit the target is too keep your lives and in the third series, that is all you needed to do but in the series following hitting the serpent or skulls (in Warriors eye) means to lose a life and are vanquished by the enemy and raven brings you back. Hit the green oval or yellow circle and you win a gold ring or two gold rings in the final week for every time you hit it. Played on either day 2, day 3 or day 5 of the week but it is played by the order in random which we never know.
Extra note: one warrior clearly has taken archery lessons before and you can tell when it is played.