We first had to come up with ideas for games and settled on a destruction game. The prototype had as goal to emulate the possible fun factor of destruction and having an AI chase the player. We tested Unity and Unreal Engine 4. Unreal's destruction was incredibly nice, but also real-time. With Unity, we tested a pre-defined broken object (which I pre-built using Blender add-ons). We ultimately went with Unity as we, the programmers, had most experience in that and we could optimize pre-built objects rather than having to deal with real-time destruction.

The production phase took the longest and was the majority of the development process. We started implementing more assets to destroy and mechanics such as power-ups and different weapons. We switched to A* pathfinding for the cops to allow for better movement throughout the pre-built house zones. As we opted for an endless "destruction" loop, we created house zones that would endlessly spawn with some slight variation between them. For the end of the "loop", there were two options, escape through the getaway vehicle (chopper) or all players are caught. 

In the final weeks, we focused on improving the code and getting rid of features that weren't able to fit in the final game such as power-ups and additional weapons as it required a lot of time to balance. Sticking with the hammer felt like the best option. We improved the UI and the menu's to fit better with the co-op experience we desired. We also optimized the destruction to avoid frame-drops when there's a lot of destroyed objects.