i did the same as sora (replacing soma and daniela with bashira on the right and spia on the left) , but placed katie lower (where u will place the heavy armor) , and let bashira fight the first 3 ninjas. She can kill the first 1 before she gets paralyzed , and u can activate her skill for the 2nd and third that hit quite hard , to burst them down. Then u use katie's skill to drop a couple of healers (1 for left and 1 for right side of the map ) , then u proceed on getting a duelist in front of her ( u still keep katie for her second reinforcement). after that i retreat bashira and place a solano on her spot , and then use katies skill , then replace her and drop a heavy (keep in mind that paralyzing ninjas tend to attack the last unit placed , so try to place solano before the heavy to not get her paralyzed). When the first 2 samurais enter solano's range , u activate her skill and stop givving a fuck about the right side. Now on the left side , u can place 2 duelists to bloak either the paralyzing ninja or the big shuriken ninja , and another duelist to block a samurai. assuming your duelists are decent , u wont even need to retreat them , but just to be on the safe side , be carefull. U will need to block 1 samurai because otherwise it escapes (if u don't have a second heavy like the video has)

All in all the main difference between me and the guide video is solano replacing bashira. and the 2 duelists replacing a heavy. It's pretty easy , and it doesn't require big micro managemenet because solano just obliterates everything that comes in her range.