Extra Notes: During our first try on the game, we tried to conquer the levels with just Fee and Lancelot (in order to purchase Smoulder prior to Bolton) but would just not be able get past through this level no matter how hard we tried. So instead, to we played it easy and purchased Bolton instead to finally beat it. Even with the third hero, this level proved to be one of the hardest stages in the game. It requires you to study the succession of attack, in order to properly sequence your build as you get pass through the waves of the level.
Campaign Mode strategy: First off, build two cannons on the sites nearest to the entry point, and beside each cannon, a barracks to serve as a choke point. Situate Fee at the middle of the heart (on the grass area), and the two other Heroes on each route. As the wave progresses, upgrade cannons. Also, build an archery tower on the right side of the map, below your barracks. Build an additional four barracks below to hold off enemy units that gets pass through your first blockade. On the right side of the heart, build archery towers, and on the left side, one cannon. Steadily upgrade them as you go.
Bythe time you reach the 5th wave, you must have built your game as seen on the image below. The villager will also show up on the 5th wave so be ready for it. You may use Fee’s wolf to block any enemy that catches up to it. It is also important to maximize the span of Lancelot’s defense buff. At the middle of the 6th wave, you must have placed all your towers. The remaining site on the left side of the heart must be installed with an archery tower, fully upgraded. Leave the 4 barracks below un-upgraded up to this point (unless you have the coins to upgrade them). Reserve Bolton’s Lightning whenever the spider enemies gets pass him and overwhelms your last line or melee soldiers. Additionally, use Fee’s wolf to help trim down the horde on the left road.
Legendary strategy: Start off with archers on top, and barracks beside them to serve as choke points. Distribute your Heroes on the two lanes, and Fee near Bolton. Build more fully upgraded archery towers at the bottom of your barracks (inside the heart). Before the last leg of the wave, secure 4 barracks near your base and upgrade them as needed (remember that troops instantly respawn when their barracks is upgraded). Reposition your heroes at near your base when the first choke point (at the top) is breached.