只要你知道塔楼是怎么造的，防御轻而易举！

Objectives

防御塔楼次。

Tiers

1. 1 : 1 objectives completed
2. 5 : 75 objectives completed
3. 10 : 150 objectives completed
4. 15 : 375 objectives completed
5. 25 : 750 objectives completed

Rewards

• 塔楼之盾