To beat the level, we recommend the following upgrades: Towering Above (Ice) – A tall castle will give you more time to defeat enemies. Treasury (Lightning) – More gold will allow you to build many towers at the start. Gold Miner (Fire) – More gold during the game will allow you to keep building towers!
If you have used up all your upgrade points, you can reset them by clicking the “Reset Skills” button at the bottom of the Upgrades screen.
You should also focus on building the following towers: Stinger towers (Fire) Longbolt towers (Ice) Frostbolt towers (Ice)
Avoid using Lightning towers, as level 14 doesn’t allow you to dig paths around them to make use of their short range. Also avoid Fire Bomb towers, as the enemies are too spread out to make use of their area damage.
Lastly, you can place a Damage mine at the top of the castle to stop any enemies that slip through your defenses!