Primary Fire: Fires about 8 spikes in front. Quite like a shotgun the spikes will not fire out in a narrow path. Medium mana usage, medium damage, slow fire rate, fast projectiles.
Secondary Fire: Fires only 4 shots, but the mana cost is less, the cool down between shots are more and finally the shots stay together more. Also a higher freeze chance.
Tips: Being able to freeze enemies is quite useful. This can easily take out most enemies when used correctly. Using secondary fire will work well at long range. Primary should be used when closer. Good if there's nothing better around. Can be switched out if you find something you like more.