Greetings,
On the borderland maps there are 4 locations where 1 person can set up a trebuchet and assault an objective with little to no retaliation ability. I have built a map to show the 4 locations that you can use. Being this is the cast please keep in mind what objectives you own. Loss of NE Tower (Cliffside) can result in the loss of Garrison which can result in the lost of Bay Keep. Loss of Briar Tower can result in the loss of Bay Keep, and Loss of Hills Keep can lead to the loss of Lake Tower.
Chain 1:
First Point: Attack Cliffside (NE Tower)
Second Point: Attack Garrison Outter From NE Tower Wall
Third Point: Attack Bay Keep From SW Garrison Cliff
Chain 2:
First Point: Take Hills Keep
Second Point: Lake Tower
Chain 3:
First Point: Take Briar Tower
Second Point: Attack Bay Keep From Briar Tower
