Great mechanic! It is interesting to be able to control the enemy and it is relevant to the theme too. The post processing applied and music fits the aesthetic well.
I think that the lack of objective is a bit of an issue. I'm not too sure what the goal is. Do I need to survive as long as possible, kill all viruses or reach a certain place? It'll be better to let the player know what to aim for. There is also the problem of life getting spawned in the walls.
Over scoping is quite common in game jams, so don't beat yourself up about it. Great job on completing the game jam!