how to do sons of scotland 1

The goals are to capture the residence to the north, protect the castle to the SW, defeat Edward who will attack Wallace's position, destroy the tower to the north and storm the archery to the SE.

You'll need to capture the residence before the SW castle falls, but out of six runs/partial playthroughs, only two runs with 3*-1* gens (the rest featuring my best eight Legend gens) saw the fall of Wallace's castle, a concentrated attack on Wallace's castle and the northern forces' decision to stay rather than attack you.
Using Legend "era" gens draws the attention of some of the attacking English forces from the start.

Capturing the northern factory triggers a comment from Wallace and a morale boost for your allies.
Whoever captures the northern residence will receive a morale boost and a praise from Wallace.
The enemies to the north and south will try to attack you. Richard will leave the residence around turns 5-7.
Your northern allies will proactively launch an attack.

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Leave Huo and Hannibal to deal with Edward's cav charge which may threaten the SW road and the inf who may storm your position via the southern bridge.
The rest will attack the eastern positions.
Raise one longbowman unit to assist against Richard.

If the English attack across the northern bridge, draw them out and defeat them. When crossing this bridge, use archers to clear out the defenders on the enemy's end.
Cross the bridge in force, defeat Richard and take the residence.

Leave Alexander, Robin and the longbowman to attack the tower and clear out the northern and NE forces. There are two archers, one inf and three cav units.
The rest will move southward to storm the SE fortifications. Using the morale boost, clear out the English troops around Wallace's castle and storm the gate ASAP.
By now, you should have raised one to two ballista units. Send them to attack the gates.

Within the English fort, raise longbowman or ballista unit. Storm the archery.

btw wheres stoic? havent seen him

I finally did it!! Yess! Thankyou Iron Duke and Nobunaga Oda oda for your guidance. Did it using 2* gens and got 3* in campaign

Iron Duke, woaah, that is one dedicated easytech player out there:)

I feel it could've been better so may well make a more elaborate version of the same joke next time you take a break 

Probably?