你就如围墙一般坚不可破。

Objectives

防御要塞次。

Tiers

1. 1 : 1 objectives completed
2. 5 : 125 objectives completed
3. 10 : 250 objectives completed
4. 15 : 500 objectives completed
5. 25 : 1 000 objectives completed

Rewards

• 要塞之盾