Use the elements to lob attacks at your enemies, summon elementals, and rock the pants off your former apprentice. Which elements you use play a big factor in your success- use the correct element to deal maximum damage. Have a fire elemental you want to make stronger? Cast some fire spells on him- just be careful not to hit the enemy fire elementals with fire spells or you'll heal and boost them!
Choose your shooting controls at the beginning of the game. From the title screen, you can change your hotkeys. Other settings are available from inside the game itself in the top right corner. Choose EASY difficulty for aiming guides!