varangian guard is holding their axe with 2 hand and their shield on top of the axe, it look like they're fighting with a damn umbrella =)) You might wanna check that out.
BTW this effect is possible, you should have to use the exploding shot function (works identical to flaming arrows, but none of the visual effects attached.) It is just as simple as making an 'exploding' version of all arrow projectiles. You can also tweak fire delay and accuracy, perhaps splitting up arrow fire into aimed targeted shots and quick suppression shots.
Give a man a fish you feed him for a day, teach a man to fish you feed him for a lifetime.