If this doesn't work for you then please do not make pointless 'OMG HOAX' posts or I'll just take this down. I don't give a crap about wether anyone thinks I am lying or not since I'm not doing this for attention. I am not available to offer support regarding this, so please don't message me ingame about this.
What you will need:
A handful of warriors in search of Battle Rage (at least 1 W/Mo)
Lina
Alesia
Please ensure before leaving that the W/Mo have Heal Area equipped, or else the two healer henchmen will eventually kill the boss. You might find it helpful to bring Sprint / Charge / Balanced Stance.
The quickest way of doing this is to simply run all the way to the res point in the centre of the map and die upon reaching it. While passing the boss cave, hold your Ctrl button and make sure the name of the boss is 'Smukk Foombool'. If it isn't then you'll just have to return to camp and try again.
After doing this, the journey from the res shrine to the boss cave should be very straightforward for even a small team since there are less enemies on this side of the cave.
When you have returned to the cave, isolate the boss by killing all of the enemies surrounding him. After this, whack the boss to about half HP or so, and then instruct all of your warriors to just spam their capture signets while Lina and Alesia keep Foombool's HP down. If Foombool's drops too low then one of your W/Mo can just cast Heal Area while standing next to it. I've heard he only uses it when he has below 25% HP, so don't heal him too much. It shouldn't take too long before you have Battle Rage sitting in your skill bar
.Now for some pictures for those who need them:
