Wonder Woman could also be involved. She might be caught in the middle, trying to stop the fight at first. But if she realizes that Superman is being a threat for some reason, she could side with Batman, or at least not interfere in Batman's attempt to defeat Superman.
In a 'Poison Ivy defeats Batman' fanfiction, it may start with Poison Ivy having a well - thought - out plan. She could be motivated by her desire to protect the environment from Batman's perceived interference or simply to prove her superiority. Her victory might be due to her ability to blend into the natural surroundings and use them as a weapon. Batman, despite his intelligence and combat training, may be caught off - guard by her unique powers. Maybe she uses her charm and allure, along with her powers over plants, to get close to him and then strike when he least expects it.
Another plot could be that Batman discovers a new weakness of Superman. Perhaps it has something to do with a certain frequency or energy that Superman is vulnerable to. Batman then builds a device that emits this energy, and during their battle, he uses it to incapacitate Superman. This would be a unique take on the 'Batman defeats Superman' scenario.
In the comics, Batman doesn't die at the hands of Bane. Bane is a powerful adversary, but Batman finds a way to overcome his challenges and live on to fight another day. Their confrontations are epic, but Batman's resilience prevails.
Well, Bane achieves this by outsmarting and overpowering Batman. He uses his raw strength and strategic planning to inflict a severe injury that incapacitates the Dark Knight.
Batman defeats Bane through a combination of physical combat and mental tactics. He trains hard to improve his strength and endurance and then uses his knowledge of Bane's fighting style to gain the upper hand. Also, he sometimes gets help from his allies.