I suggest to use trebuchet to take out the boss. I used the offensive setup for it. Defensive don't seem to be able to take down the boss under 3mins time limit.
@faizedfoxgaming7426 yeah but I am not sure if ballasta will be better as I notice the trebuchet have food distance which the boss don't seem to easier hit and trebuchet damage also slightly higher. But anything that can kill the boss is good doesn't really matter what is being used.
as long as u place the ballista or trebuchet in the spot i show in demo they will hit boss u just gotta keep them alive this is how i beat the stage after trying forever lol
@faizedfoxgaming7426 yeah I used that spot too. I had to replay it 2 times before I was able to defeat the boss in the hard mode. First time just run of time before he was defeated.