Interesting Kelex… Mr. Freeze’s Cryothermal Gun… 
First I would use the Cryothermal gun to fill the cracks that formed in the street. I’d then skate towards the bus and yell to the kids to get away from the door and freeze one of the doors to the bus. Then I’d use the acetylene flame to break open the doors for the kids. I’d also switch back to the ice blast to make a slide for the kids to slide out of the bus for some fun after the terror they must have felt being trapped. Then, I’d head back from my vacation there and lay low because Batman would want to know where I am and to return Mr. Freeze’s cryothermal gun. 
Sorry Batman, it’s now in the Fortress of Solitude. 