I need a game developer to make a sniper game

I want something similar to sniper3dHow much would it cost, and how long would it take? And do you develop it and design it too or I provide the graphics and animations separatelyRequirements for the I want something similar to sniper3dHow much would it cost, and how long would it take? And do you develop it and design it too or I provide the graphics and animations separatelyRequirements for the game needed:1- About 30 levels, starts easy and then becomes harder.2- About 10 Weapons3- Upgrade system for the weapons (increas...