Difficulty Levels

=Overview = In the Call of Duty series there are many difficulty levels. Starting at Call of Duty 4: Modern Warfare there are now 4 distinct difficulty levels.

Recruit
Recruit is one of the four difficulty settings in the Call of Duty series. It is the easiest of the four difficulties, as the player takes small amounts of damage from most weapons and the AI is generally inaccurate. The difficulty is recommended for players new to the First Person Shooter genre.

Tips
It is NOT recommended to rush ahead of your allies, because it is possible that every enemy in the vicinity will open up at you. Only rush ahead when there are no more than three enemies, and you have a fast firing weapon with sufficient ammo.

Trivia
In Call of Duty and Call of Duty: United Offensive, this difficulty level was originally called "Greenhorn". In Call of Duty 2, this difficulty level is named "Easy".

Regular
"Your skills will be tested" — In-game description

Regular is one of the four difficulty settings in the Call of Duty series. It can generally be considered the "normal" difficulty setting as it is slightly harder than Recruit, but easier than Hardened and Veteran.

Hardened
"Your skills will be strained." — In-game Description

Background
Hardened is one of the four difficulty settings in the Call of Duty series. It is harder than Recruit and Regular but easier than Veteran. Playing on Hardened mode allows players to achieve many of the trophies and achievements that can only be obtained by playing on the harder difficulties, without actually playing on Veteran. It is recommended to play on Veteran, seeing that your health is already low, and you can earn more trophies or achievements.

Veteran (difficulty)
Veteran is the hardest of the four difficulties that are in the Call of Duty series. The player will find they'll take much more damage and have very low health, with enemies having increased accuracy and deadly reaction time. It has a reputation among fans of the series as being one of the hardest difficulties conceived in video games[citation needed], and thus completing it is a noteworthy accomplishment.