Shadow Tactics: Blades of the Shogun
44 Achievements
60-80h
The Old Way
Kill General Okkoto with an explosive barrel. Details for this achievement will be revealed once unlocked
9.7%
How to unlock the The Old Way achievement in Shadow Tactics: Blades of the Shogun - Definitive Guide
Near the end of the level just before you blow up the supply building use "Mugen" to take one of the smaller explosive barrels in the top right of the final camp and place it just infront of the tent that general Okkoto spawns from. After this is done have the level advance as normal once the general spawns use "Takuma" to shoot the barrel you place and the achievement will pop.
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This can only be earned during the eighth mission.
After blowing up the supply depot during the mission, you will need to gather all your characters at a safe spot (bush). Before doing this however, look towards the right of this bush. You'll notice three explosive barrels. Have Mugen carry one (or more) of these to the other side where a large tent is located. The tent in question is decorated with a mon resembling that of the Takeda clan (four diamonds).
General Okkoto will come out of this tent, so it's a good idea to place a barrel near the entrance. Other spots where he will go to are the table and the tatami mats used for cutting practice. Once you're ready, gather your team at the safe spot and General Okkoto will come out of his tent. Now simply shoot one of the barrels you placed earlier. (Also earns you Okkoto.)
It's easier than running and shooting at a barrel.