The game's style will be "cartoon" and somewhat "sci-fi".
Players and enemies will be limited to around 64x64 pixels (maybe bigger). Each player and enemy will have different types of weapons ranging from missiles to guns. Additionally, players are going to be robots, while enemies will be robots/aliens/etc. So, enemy weaponry is going to differ from the player's.
So this is what you can expect as far as assets go:
Title Screen
4 "Good Guy" sprites, each having walking frames, firing frames, and dying frames
4 "Bad Guy" sprites, the frames are identical to the "Good Guy" sprites
5-10 Weapons - Projectiles need to have an explosion animation
3-4 Buildings.. animations are not necessary
2-3 Different Foreground landscapes
2-3 Backgrounds
Hello ,we have gone through your project named Android Graphics Designer (Mobile) and we like to convey that we have already done similar kind of projects before also. We can address any concerns that you might have in regards to moving forward with the project.
Regards Krish.