(A) Get off my dick.

(B) It doesn't take a genius to see that high explosive rounds don't work. It doesn't take a genius to switch to armor piercing rounds. It doesn't take a genius to stop the blade by grabbing the other robot. It doesn't take a genius to lure the enemy to where they can be hit with a shipping container from the crane you've been hanging around all day.

Using the environment against an opponent who is unfamiliar with the area does not require genius intellect. Inaho isn't L-elf, he isn't Lelouch, he's not Yagami Light or L. He's observant and doesn't get panicked. That's it.