defeating turtle

[bucazaurus]

The turtle on impossible is very easy to kill using a single Horseman as a tank
and archmages,bowmans and priests as damage dealers.(also Inquisitors if possible)
Just be sure you have learned Heal spell before enter the combat.
In first round move the Horseman near the Turtle and go Defend mode.
Use haste if not enough Action Points.Then use the Shield ability from archmage on them. After that start shooting. Keep using heal and shield on horseman until the turtle is dead.Do not attack with the Horseman. Just defend.You will win with no losses .