Your challenge on Day 1 is to demonstrate your 3D modelling skills, creating a simple Game Asset Scene, incorporating basic primitives creation, sub-object level manipulation, using your vertices, edges and faces, extruding/along normal's, separating surfaces to create your elements.
Your Challenge on Day 2 is to simply create a few more assets, paying attention to low poly topology, and adding simple colours to surfaces and lighting into your scene, rendering using Eevee.
Each day you are to submit your work in progress, by creating views that mimic my shots, submitting a PDF layout submission, and 2 Blender files in progress.