Here's a list of OFP's available difficulty settings and what they effect when enabled:
| Extended armor: | Armored vehicles can withstand greater damage. |
| Friendly tag: | The identification of a teammate in your crosshair will pop up. |
| Enemy tag: | The identification of an enemy soldier in your crosshair will pop up. |
| Extended HUD info: | Waypoints will be shown on the screen with orders and distance. |
| Auto report: | You will automatically report enemies to your group, sometimes even if you don't actually see them. |
| Extended map info: | Both friendly and enemy location markers will display on the map. |
| Weapon crosshair: | A weapons crosshair will be displayed on the screen when in 1st and 3rd person view. |
| Auto guide AT: | You can lock Carl Gustav and AT weapons on enemy vehicles (like you can with AA weapons on aircraft), instead of having to guide them to target. |
| Clock indicator: | Displays a directional clock in the lower left hand corner of the game screen when a target is identified and announced at a position from 1 to 12 o'clock. |
| 3rd person view: | Allows you to switch to 3rd person and command view during gameplay. |
| Riffle bullet tracers: | Bullets shot from all OFP rifle models will emit a tracer light path. |
| Super AI: | All AI soldiers will be set to the maximum AI skill level. |
(Source: player InqWiper, on this BIS OFP forum thread).