On the ground.
Magic skill after magic skill was activated; lightning arrows, earth pikes, fireballs, ice cones, wind blades, summoned beasts, poison clouds. The soul evolvers of the human side who focused on Magic and Mana as their main stats stood on the high walls of the base and used each of their skills with practically 0 rest as they could not afford it; every time a skill with a predetermined cooldown time became usable again, it was immediately cast even if it was to end the life of just one more enemy.