The HUD contains the following elements (in clockwise order):
[NOTE: You can click in various parts of some of the images for more information!]

	The Agent List shows life-signs and organization affiliations (as well as team colors) of all agents. If an agent has a secret, their life-sign monitor turns white. If an agent is killed, their life-sign monitor shows a flat red line. The three dots next to each agent show the number of secrets they've found and retrieved. When one agent or team collects 3 secrets, the game is over.
	Your Inventory shows icons and numbers representing what items you are carrying, and how much of each you have. The item that is the brightest is the currently selected item. Items with a number next to them indicate that you are carrying more than one of that type of object.
	The Files bar shows how "full" of files your agent is. You get files whenever you hack, regardless of whether or not they count towards a secret. The more files you have when you run through the regenerator in your base, the more you get paid.
	Your Credit Balance is how many credits you have available for spending on tech. items and ammo.
	The Shield Level Indicator shows how much shield strength you have remaining. When this gets low, your body will begin to take damage; and will be much more susceptible to certain types of damage.
	The Fuel Gauge drops as soon as you use your jetpack. It will continue to drop to empty, regardless of whether or not you use your jetpack again. Once the fuel is exhausted, you will NOT be able to use your jetpack again until the fuel is fully recharged. Fuel automatically recharges itself after a few moments. When the "LOW FUEL" light goes off, you can use the jetpack again.
	The Mini-map is perhaps the most complex (and most useful) thing on your HUD. It can show you where you are, where your enemies are (red dots, if you've recently seen them), where known enemy bases are (rectangles, color-coded to each enemy agent), where hack-able terminals are (white crosses), where secrets are (blue crosses for your secrets, red crosses for enemy ones - or flashing circles around enemy dots, if they're being carried), and where explosions or fire-fights are going on (orange blips or areas).
	Your Fatigue Gauge monitors how much stress you're putting on your agent. This is only active in games where fatigue has been turned on.
	The Health Meter shows how much of your health you have remaining. When this drops to 0, you die and will have to wait a moment to re-spawn in your base before you can continue your mission.
	The Weapon Selection Area shows an icon for your currently selected weapon, and draws an outlined box around the amount of remaining ammo for it.
	The Information List shows your advancement towards finding the location of the next secret. Completed parts of the puzzle are in bright green; and the piece you are working on will flash while you hack. The information list is not visible when you haven't deployed a base door, or when you are currently waiting for the location of a secret. NOTE: With many agents in a game, the Agent List sometimes obscures the first few steps in the Information List.