"Dedicated to the way of the sword. Will attack anything in front of them."
The samurai is the first available troop in-game and is the most used by beginners. The Samurai is best used in large groups against the Archer Tower. However, they are weak when grouped and are hit with splash damage, such as Freeze Towers or Cannons.
"These swords cut through the enemy and occassionally ignite the area around them! Hot stuff!"
Samurai have two options for a weapon, the first is in the above "Stats" table and is the "Iron Sword". The second is the Flaming Sword which does less Damage Per Second than the Iron Sword but has a chance for causing extra splash damage to surrounding targets.
Choosing the fire sword means that there is a 25% chance that your samurai will cause "splash damage" to surrounding targets within a 1.5 tile radius. This added benefit comes at a cost. There is a roughly 20% reduction in Damage Per Second for the Flaming Sword as compared to the Iron Sword (see the Flaming Sword DPS Reduction in the Stats table above). So your Flaming Sword will do less damage per hit but every few hits it will do additional damage to multiple targets (as noted by the Splash Damage Per Second in the table below).