I recently created some 3D mobile game assets based off a concept (included in images) and abiding technical guidelines which required working in an optimised manner. It was a essential for both assets to be completed within 7 days.
Fortress: 6226 Tris / 3263 Quads
Warrior: 4292 Tris / 2173 Quads
Modelled/UVed/Rigged/Animated in Maya.
Textured in Substance Painter.
Imported into Unity.
Fortress
Run & attack animation