I'm modifying the settings of my sci-fi story which centers on gun fights and vehicle combat. Basically, it's about a bunch of people trying to kill each other for their different beliefs and interests. The protagonist is a gun akimbo who was genetic engineered in a secret lab and later saved. Thanks to the inhumane experiments she received, she became the first ever super soldier and gained the power of synesthesia. Unlike Canaan, she doesn't rely on her eyes to activate synesthesia, she cannot switch the power off as she wish, and her eyes do not glow the rainbow colors of doom. However, she still needs more supportive abilities since her firepower, when compared to the other dakka maniacs, is rather low. What I've come up with were either too"phychic" or too"superhero-ish" that they won't fit into my story. Besides the protagonist, there are more genetic engineered enemies that haven't been given neat abilities yet. I know my sci-fi is a total softie, but at least it's harder than LEGO. The question has troubled me for a long time and I appreciate any help.