ToME: the Tales of Maj'Eyal

Is it? It seems easier to achieve in there

sure

It's not. I've tried it. The trouble is that it's quite a bit tougher to get a decent high-level equipment set down there, especially for Rogues, plus you'll run into more out-of-depth monsters that will tear you to pieces.

If anyone's having trouble unlocking Marauder, here's a build that will do it before level 20.

Get the poison tree, learn 2 poisons and either get an insidious poison infusion or a weapon with insidious poison. Stack 3 poisons on an enemy and then do a venomous strike with a 2h weapon like bill's club while stealthed (for the shadowstrike bonus). Norgos will have >600hp so you can use him as your target.

I've unlocked them on level 15, hitting Wrathroot for > 700 nature damage.

It's best to apply the poisons without a weapon equipped, allowing less of a risk of the enemy dying before you get a chance to knock its head off.

It's even better to apply two poisons normally, then apply the third with an Insidious Poison Infusion.

You can also use standard poison off a weapon or other effect. Still counts.

If you get really lucky with drops, you can apply two poisons normally, then hit with a weapon with insidious and/or "of nature" (or any other "poison") to get another two without the reduced chance.