Reading forums, the top complaint about "Defend the Rook" is that it is "too RNG dependent." Usually, that is a skill issue. Here are the three mistakes players make:
A level 3 tower is strong, but if it gets targeted by an enemy "Bishop" (which deals splash damage to adjacent towers), you lose a huge investment. Spread your upgrades. Two level 2 towers are better than one level 3. Defend the Rook
