Blow em to pieces with Bozee Bombs ( Convinient placed barrel o boze placed near a building and then shoot with a fireball arrow/bolt , yay)
screw booze use a barrel filled with syndrome line it up with a material that has a quick ignite point and line it up in all the houses. best to do this as a innocent as you won't last long planting this while they attack you.
drop a fireball at the start and watch the trail go up to the homes of those who did [insert last person you played] wrong!
sadly I'm don't have a reason nor the skills to make a syndrome that boils and works... but as a card carrier of Horrible/Evil Deeds Done in Adventure Mode. or HEDDiAM I can say doing this is much more satisfying and Dwarfy than bull rushing into a room and getting pull in and stab to death. at least with this tactic you can "gas them out" and pick off the survivors given that you made sure to make the poison immune to your race.
though if I was you I would have recruited a Zombie version of my dead adventurer and tweak him/her so that they can waste a town then gas the survivors. If I was still pissed off I would then retire my adventurer some where close turn the place into a bandit camp embark on top of it take the gassed survivors and force them to build a statue of the adventure they killed. Herd them all up into the mouth of the statue and have them be eaten(hopefully the design of the stomach being a 3/7 water pit above a magma layer would work nice as a imitation of digestion). Bonus points for finding a way to smelt a name bronze mat and turning it into name's material blocks.
Yet I'm not you so I take it the poison bomb with long material fuse would be just nice.
step by step on how to do that would be in layman's terms
make a custom raw stone with a ignite range that lower than normal clothes and materials
make a custom reaction to spawn this and a barrel
make another custom reaction to put poison(animal fluids or custom) into the barrel
as a new adventurer plant the barrels filled with poison into the homes of the ones who kill 'him'
with the rope fuse a good length from the homes to a high look out that captures the view of every house best if you connect rope pieces for syncing flames
save
hit record and ignite the fuse with a bonfire/firearrow/firebolt and if done correctly the fire will spread through the fuse and into the homes of the murders who should die from the poison. that should be if you are Karma sadistic enough the villagers can die the same way your adventurer did using the ability to effect different parts of the body using syndromes.