1-single or offline not multiplayer.
2-contains ads and purchases.
3-the idea to reach the enemies and kill them by knife.
4-search for a key to reach the gate and open it.
5- 50 levels maximum.
6- each 15 by a special map to play in.
7- 3d charcaters.
8- i will provide the assets (characters - maps)
9- log in by fb , twitter and gmail.
the purchase if he can not get the key , he can pay to open it.
you should try this please: Hunter assassin to get the main ideas of our game.