Another game developed by Ninja Theory featuring similar style combat but a co-operative edge that I can take away from the gameplay is Enslaved: Odyssey to the West. In this game the player takes the role of Monkey who after being knocked unconscious finds himself under the orders of a woman named Trip because of a slave headband. She orders him to take her to her village, which after being told that if she dies Monkey dies, he has to comply.
Much like Heavenly Sword, Enslaved has a similar type of combat with Monkey using a a staff which can be used to attack enemies in close range and then also the staff can turn into a projectile firing weapon for enemies afar. Trip doesn't play so much of a part in combat within the game but does have a big part to play in the platforming sections of the game. Trip can help monkey be thrown into places out of reach so that obstacles can be overcome and also scout out the upcoming areas for enemies with a robotic dragonfly.
These games are two which I would like to derive inspiration in terms of the type of game that I will be creating the Mayan Hero Twins for. In the Hero Twins case I think that to create an experience that isn't concentrated as much in the gaming industry would be a focus on co-operative gameplay. With the characters being twins this opens up the gameplay for co-operation between them to solve puzzles within the environments. Also expanding on a similar style of combat like Heavenly Sword and Enslaved this can be incorporated in a more co-operative way with the two being able to combine their abilities and attacks.