The PC's are smart enough to actually learn or'zet and have used it as a way of insinuating themselves with the local population (in the nicer parts). When the "pinkies" go outside the wire they're always accompanied by other ork/troll PC's or their ork/troll contacts. But even than, there are areas where I should be harassing them.

yeah SOS definitely won't like any pinkies anywheres near their turf

Also remember that it's a very dynamic place, with new tunnels found and opened up or dug and old ones caving in all the time...

Nor would the Cascade Trolls I'd imagine, thank you all for reminding me that I need to make the OU a little more culturally diverse.

I don't mind the stalagmen, they make a wicked tasty pizza. But the DeepCrow's gotta go. Have you SEEN the cost of Purina DeepCrow chow?! (IMG:style_emoticons/default/mad.gif)

Oh lord, now I'm gonna have to break out my Legolas poser-Adept. (IMG:style_emoticons/default/grinbig.gif)

-Siege

I wonder how far you'd get with nanopaste disguises and big sweaters. Of course, at 500 (IMG:style_emoticons/default/nuyen.gif) a pop it's probably simpler to bribe someone.

speaking of dropping attacks, how about huge slugs with acidic slime? or have them attach themselves and use mind control ?
or 10 meter tapeworms. or fungus that steals your body heat.

the pastabilities are endless. (IMG:style_emoticons/default/spin.gif) (IMG:style_emoticons/default/spin.gif)

how about a methane gas pocket, characters standing in the midst of it, firefight begins, BOOM!

WMS

leftover land mines? or perhaps some kind of trap intended for devil rats, like sentry guns?

Humanis or Alamos get some mining equipment set up on the surface and drop a mine shaft into a highly populated area of the underground which the runners have to pass through. Then they drop bombs through, the kind that throw shrapnel all over the place. Instant chaos, dozens of people injured and a few killed. This is followed up by a half dozen fanatics rapelling down with SMGs, firing at anything that moves. If the runners stay and help, they earn major respect in the underground, effectively sealing their right to use it. If they run, however, the whole underground starts giving them the cold shoulder, they aren't really welcome anymore, and no amount of bribes or favors will get the Orcs to forget that the runners will cut and run in their time of need.

If I were ever on my way to go ork-poaching, I'd bring something bigger than an smg.

An SMG is the biggest gun I can imagine a not-heavily-modified human firing while rapelling down. And they're a lot easier to get a hold of.

In the game in question A20K actually managed to light vast tracts of the OU on fire, the players are still trying to figure that one out.

And if I have to fight Ork I think I'd want to be a heavily modified human, if only so I can carry something heavier than a SMG.

Why bombs and repelling attacks? Let face it Alamos and Humanis isn't that stupid. Trying to go hand to hand with orks and trolls in large amounts is suicide. And a hole big enough for them to repel through would make to much noise and would be a choke point. I would however think that they would be very happy to use a gas attack. Lets face it the OU has no wind to disperse it and even CO2 would be lethal if they pumped enough of it in down there (not enough oxygen to breath). honestly propane would be the way to go, its heaver than air and even if the fire and explosion didn't kill a ton of orks, the lack of oxygen from the fire burning it all up would.

And they could just write it off as sewer gas or a gas line leak. Not every attack on a grand scale needs to be a "We did this!"

I hate to say it, but SR4 background doesn't play either organization as genocidal enough. Again we play in a much more gritty game.

FYI even though not mentioned, any underground structure will have a "means" of moving air around, that means the Ork Underground does too.

Do not forget about the magic lake that is down in the Ork Underground, and those magical lodges there. On whose side would all those Shaman be on if some radical hate group be attacking? Troll Shaman Hougan, possessed by a rating 6+ Guardian Spirit, even better several. (IMG:style_emoticons/default/grinbig.gif)

Any drilling into the inhabited areas of the Ork Underground, would be detected due in part the cheap price of sensors that would detect such work.

WMS

Not sayign its the best idea, just better than drilling a hole big enough for a man and then sending an assault team in.

Also the size of a drilling rig to drill any hole, will be a bit difficult to conceal, even one to pump gas in. One to drill a man sized hole,,,, (IMG:style_emoticons/default/eek.gif)

Things to remember the Ork Underground is 50+ years old, the inhabited areas may be under buildings in downtown Seattle, and the inhabitants have made some improvements.

It is also not Glow City/Barrens. Besides the government of Seattle may like having a hole the Orks live in. (IMG:style_emoticons/default/wink.gif)

WMS

shreikers, gelatinous cubes, and green slime.
For a really good time-
awakened ergot.
Fungus and slimes are going to be really common. I'd imagine there is some awakened form of phosphorescent fungi down there that would make for really good magical materials. however, certain shamen have controll over those areas and don't want to let anyone else near.

I love how the Ork Underground just became the Mines or Moria. Hell, I'm all for an Ork magical group (Sons of Sauron anyone?) trying to rutual summon a greater Shadow spirit (or whatever you would translate the Balrog to) under Seattle. I totally just got my next campaign. (IMG:style_emoticons/default/grinbig.gif)

Not trying to take a dig at the writer(s) for that one, but when you play it out in your head, it does kinda sound like the backdrop for Moria (which, in turn, is the wellspring for all former dwarven halls taken by Eeeevil!)

Its your old "dwarves dig nice home, dwarves get chased out of nice home, new owners change locks" tale. (IMG:style_emoticons/default/grinbig.gif)

-Siege

Cos nop one seems to have said it yet, Specters and ghosts. Some of the tunnels are haunted by those meta's that did not make it.

The Ork Underground sounds like Shadowrun the D&D experience.

Just watch out for the Night Elves.

-Siege

Dwarves turn into Goblins