Tower defense game - Animation sprites - FX - Unity

Hi all unity developers, I have started to develop a tower defense game, unfortunately the developer decided that he wants to find another job, so he quitted the work. He build the engine and all the dynamic is there, with couple of bugs. You can use his code or create your own. About the game: - A 2d game from a 3d perspective with 2d sprites, the world is rotated 30degrees right; - A tower defense game with enemies coming and follow the paths, in any direction, at some points they can also go around a circle one time, or even have common paths but opposite direction, and they try to reach the stronghold. I am thinking about having 3 lanes for each path. - The towers and stronghold will try to kill them. - Enemies will be pedestrians, cars, airplanes, parashooters coming from the airplane after airplane explodes, then going to the ground paths then walking. The cars/vehicles once they die the pedestrians will start walking out of them. Each pedestrian will have running and walking mode. - There is the need to visually define the paths in Unity in the game editor, and there is the need to define the spawn of enemies coming and who comes out of them once they die(for vehicles and parashooter). - FX (fire, rain, fog etc...) - Glowing effect around objects - Android/IOS/Steam(if technically possible) - Ad system(Steam also if technically possible) - In App purchase(Steam also if technically possible) - Facebook invite friend - User profile, saving his progress - Campaign mode with 150 levels with 3 difficulties for each, all of them should be configurable in Unity without the intervention of the developer - Survival mode and endless mode where we need to find an algorithm to generate the enemies randomly based on the user achievement, the level etc... Since the unfortunate event with the last developer the followings will be part of the process. - Completion of test is required - There will be 3 big payment milestones, that I am sure that the code that you write can be usable in case you cannot finish all game: 1. campaign mode, and all the menus, being able to click everywhere, and start any level in campaign mode. the game play should work without any visible bugs with all the effect, the path and the spawn editor should work as well. 2. The survival and endless mode 3. The configuration - ad system, facebook invite a friend, payment, point system, upgrades, gifts, user profile and all the rest of tune up and configuration. To be successful(or have more chances) you(or your team) need to have complex games published in Google Play or Apple Store and to have the level of maturity(not in talking) to be able to write code and to make any necessary change to achieve the desired result. I am also a developer and I know that there is nothing impossible. TEST The test is mandatory and that will be also the base of the dynamic of the game. You have a landscape with 2 paths and some points which are connected with lines: red, brown and blue. The red one has a junction so enemies can go randomly on one of them. You need to be able to make the enemies([login to view URL]) to go on each of the path, randomly, between the points, the enemy should not change direction and have the right orientation. The tower([login to view URL]) will be placed randomly, I am going to ask you to place them in some points. The defender([login to view URL]) will randomly look around and when enemy is in the visible area(should be configurable) it will start shooting([login to view URL]). What is the most important: All the movements should work flawlessly, all orientation should be perfect. There is need for at least one FX(fire, shooting etc...) This is not a PAID test, the price of the game is already high and will cover your effort to make this(hopefully is not an effort and more a passion). This is my free time project so implications/ideas/ are very important! Sending the video with the gameplay is enough there is no need to send the the android version if you don't want.