Re: How powerful are your DF PC's?
 

Underwater quest?
Must defeat a foe honorably using a ritual weapon?

Re: How powerful are your DF PC's?
 

In a D&D game I once ran, the characters had to cross a desert to get to the dungeon. It was so hot and tiring, they ended up leaving all their armor in the sand before getting there.

Alas poor Hurin.

Re: How powerful are your DF PC's?
 

I believe that he was playfully ribbing the B-dog style, where Cosmic Lava is just waiting to flood your lungs, or invisible pixies destroy your eyes, or where a tiny helpless duck explodes dealing 3000d6+3000 Cosmic Burning damage.

Re: How powerful are your DF PC's?
 

More for the list ...

Bolas and Flails. With Jamming Glue for more deadly foes or escape.

Cheap low-tech disposable single-shot ranged weapon whilst closing. Flails to get around shields and squish incapacitated foes. Perfectly acceptable brute weaponry.
Jamming Glue is also really cheap and easy to use for the more intelligent brutes. If jamming glue is too high-tech for the image, then plain old flammable oil/tar/etc and a torch is always an entertaining tactic against heavily armoured foes! >=D

Re: How powerful are your DF PC's?
 

I had forgotten about the pixies. Those were my favorite.

On a serious note, I would trap him in some thick mud, then smoke him out.

Pretty easy scenario to set up, really. The dungeon's water supply gets diverted when the adventures inadvertently break the dam holding it back. This causes a mudslide, greatly reducing the tank character's mobility. Then the mud continues on, ripping torches from the wall and dropping them into the monster's food stores, which happen to be dried hay and other grains.

Now he's stuck, unable to leave, and unable to breathe.

I would make sure the adventurers were aware that they were completely at fault in causing the disaster, too, by casually dropping hints the whole time about the nature of the fake wall (which was really one part of the dam).

Not a particularly lethal scenario, but I think he'd learn his lesson. For added danger, have the fire spread to the wooden beams holding up the dungeon complex. Trapped in mud + debilitating smoke + falling ceiling.

Maybe add some mudmen (gotta have some beforehand, so it doesn't look like you're being cruel, though). They can creep up on him while he's trapped. Maybe they could be assisted by some smoke monsters, whose vision isn't obscured by the smoke.

Be creative!

Re: How powerful are your DF PC's?
 

A cascade of burning/sticky/thick crude oil down an angled corridor would do horrific things to those who can't get out of the way quickly enough. Have a smiling orc smash the barrels (starting the flood) and then drop the torch; just to make it personal when they get to said orc and extract their revenge.

Or a monster that spits giant wads of snot that instantly (on contact) dries to a stone-like consistency combined with a severe weight. Weigh him down even further until he literally doesn't have the strength to move. Then have the orcs come in with axes and maces. Poor Knight.

Re: How powerful are your DF PC's?
 

Sometimes I find myself resisting thinking up ways to specifically target the tank as unrealistic hosing. But it doesn't have to be that way. It can actually be quite realistic.

Consider:
If he's wasting tons of monsters, he's going to get a reputation with the monsters. He may shine for a while, but at some point they're going to get wise and put their heads together to target him specifically. The monsters might come up with some pretty wild tar and feather acts.

This goes for any character who's getting overpowered. I wouldn't use it too many times. But a few times as realism would suggest could really add some fun. Actually, most players I know would find it flattering.

Re: How powerful are your DF PC's?
 

Even without having heard of a specific character, many settings would have the standard assumption that the most common dangerous foe is a heavily armoured, heavily armed melee combatant.

Designing defences against that is just good sense.

Re: How powerful are your DF PC's?
 

This highly depends on the sytem used. In D&D this is the guy with a pointy hat and women's clothing... ;-)

Re: How powerful are your DF PC's?
 

Yes, but we aren't using D&D.

In GURPS, whether Dungeon Fantasy or not, wearing heavy armour and using military weapons is a good way to survive battles and kill enemies. It makes sense that enemies that are not fond of being killed but cannot afford to meet you on equal terms would come up with strategies for dealing with rich Knights in full harness.