My strategy was temps, syringes, and x-rays. After a few runs trying to get the hang of it, I had everything under control.
This game would benefit a lot from a story, similar to...what was it...doll factory, I think. Unlock endless run by having a story to tell. Alternatively, every bug, through the inspection process, might have their own story, or their own quirk. It would be an extra thing to make the game something special. Like Jorji Costavo from Papers Please.