> Is the lab important? I've sent 22 knights down to attack one of the lab's.
> I got SLAUGHTERED!!

I finished level 3 in 98 Years !!

I built 3 Labs of my own, and waited until I had discoverd 'Burn' other
buildings, and GunTowers ...

Build a GunTower close to the enemy boarder, then build more foreward ..

And have plenty of Soldiers spare to protect them ...

It worked here