[TigerBlood]

I typically have more trouble with the druids casting 'Bleed' while the vines block advancement.

My usual tactic is to send a decent sized force of melee units to engage with the vines (starting army usually, so long as they have shields) while a couple of small squads of cavalry (3 or 4 units each) are to the sides, scripted to attack archers. Sometimes the blowpipes are engaged, but usually the majority ride to the rear and start killing the woodsman archers and blood slaves.

I have had some small success with archer nations scripted to fire archers, but it requires a lot of archers to force the woodsmen to rout quickly and leave the vines without leadership.