If you can work with your Fireteam then great, but ultimately things are pretty clear and linear, and if you kill
everything in your
path and
shoot the big guys at the end, you'll do just fine.
Kill the horde of Skull warriors and collect the ectoplasm to set up towers and defenses whenever the magic stones light up: CATAPULTS, to throw flame to the enemy; BARRICADES, to block the attackers
in their
path; BARRELS, to
shoot fire arrows and explode them
in the middle of a skeleton legion; POISON PLANTS, to hit the warriors and slay them slowly while they walk... There are diverse types of magic energy to use at war: LIGHTNING, to defeat targets with metal or steel armor; FIRE, to burn light armor troops and blow up the exploding barrels; ICE, to turn your victims into ice cubes and slow them down; POISON, just one drop and the victim will succumb little by little to its toxic effects; STUN, to
shoot and make their heads spin and leave them stupefied; EXPLOSIVE, to send
everything flying with its strong TNT head... Use all with the different kind of arrows and do individual, radius or multiple damage.