Wheres the best place to fight them, empty, maybe even multi-combat so i could use a cannon?

There are some near the gnome stronghold

Not sure if they are multi combat, but these are usually empty, at least they were the last time I was there. There are a few in the brimhaven dungeon, on the way to get the dusty key from the prison.

Not sure if they are multi combat, but these are usually empty, at least they were the last time I was there. There are a few in the brimhaven dungeon, on the way to get the dusty key from the prison.

 

 

 

you mean taverly dungeon... ;)

 

 

 

and yes, taverley dungeon is almost always empty, not sure about cannon..

Thats where im killing them atm, but unfortunately its single combat. They seem like the ebst single combat ones though, lots of them, and always empty.

I don't think they are in a multi-combat zone.

 

 

 

It is my opinion that the best way to kill these is in Taverly Dungeon.

I think to get around the single combat you can set up the cannon and then safespot, and it will hit all of them(this is the advice I gathered from a player-guide on Yaks). In Yaks the person stuck it in the gate and hid behind the fence.

I don't know if this will help but I heard there were some moss giants on the island you go via when taking a ship to lunar isle. I'm pretty sure they're in multi there and pretty empty, hope this helps. Guessing this is about the champions challenge though so it probably won't :P