Hell - City of Demons
A large gap?
Ha!
Because Dave is Batman, he takes out his grappling hook and GRAPPLES across to another roof!
Because Dave is a ninja, he'll easily jump across the roofs to get as close to the hospital as possible.
He'll then examine the gap between his current roof and the hospital's roof and if it isn't too far, he'll jump.
If it is quite far he'll try to jump down to a boulder, put on his clawed gloves, and then jump to the hospital's walls, using clawed gloves to grip the wall and climb!