How to make the character to jump from house to house.

hey how to make the character to jump from house to house as well as climbing the wall like assassin creed.

The default character controller already has "jumping" included, and I'm sure you can change the parameters (jump height etc.). So that part is easy. You could also change gravity/weight for some special effects ;-)

"Like Assassin's Creed" will be the harder part because Assassin's Creed has a really advanced way of character behavior, with lots of different animations and logic. Don't expect to get this done "like assassin's creed" unless you have an excellent team of animators and programmers (or great talent and a lot of time) ;-)