It is best to use the two nano programs that you begin with
While, as a bureaucrat, you may be able to handle many of the battles that you come across later in the game, it can be fairly difficult at first, especially for the first four levels. To remedy this, it is best to use the two nano programs that you begin with knight gold as carefully as possible.
Focus on melee enemies when you can and freeze them in place. After you do that, blast them several times with your winter's bite, and they should fall rather quickly. When you do encounter trouble, your pistol should be able to back you up.
Occasionally, even in later levels you may wish to avoid any conflict. For instance, you may be on a mission and may be short on time.
To enable you to still complete your mission in time, you have the capability of putting enemies that you come across to sleep. By doing this, they will let you slip by for a limited amount of time, so long as you do not attack them. Simply cast whatever sleep-type nano formula you have on them, rush past them, and you are home free.
Lastly, because of the high nano proficiency of the bureaucrat, it is wise to grab one of the general healing nano programs to help out when your group needs it. The overtaxed doctor is an unhappy doctor.