The Unfortunate Necromancer 2

In The Unfortunate Necromancer 2, you will be going after the undead with fireballs. Your fireballs come from magic, so watch your mana bar at the top of the screen. Mana regenerates slowly but you can run out, so be careful not to leave yourself defenseless. Don't lose your hearts, or you will die. You'll be able to purchase upgrades in between each level that can make your fireballs more effective, speed up mana regeneration, or add hearts for health. Buy potions you can use in battle to help stay alive. Can you complete all 25 levels in The Unfortunate Necromancer 2?