The maps in COD4 are a lot smaller than BF2 and are easier to learn. Saying that it looks like there has been a lot of thought put in to the map design and I'm still finding places to get to to give you a good angle on the enemy.
I like the foot soldier only game, but you can call in air strikes and chopper support. A couple of guys on your team with light machine guns will bring down the chopper.
Weapons range from assault rifles, sub machine guns, light machine guns, shotguns and sniper rifles. If you choose sniper class you wear a ghillie suit which makes you very hard to see. The graphics in this game are amazing.
When you start off with multiplayer you have basic kit primary weapon and side arm. As you get kills with you primary weapon you can get unlocks. Some have grenade launchers, silencer, red dot sight and then 4x ACOG site. I favour the silencer with iron sights on my weapons. This cuts out the muzzle flash and you are not seen on the enemys UAV (unmanned ariel view). Get a 3 kill streak call UAV with lasts for 30 seconds, 5 kills gets you a airstrike and 7 gives you chopper support.
Not all weapons are available from the start some are unlocked at higher ranks. These start at 1 and go to 55. You also get perks you have 3 groups and can choose 1 from each group so you can customise you character. You can save 5 characters but can only change them when you are not playing. A list of perks and what ranks you can get them can be found<a href="
http://blandname.com/2007/11/12/call-of ... criptions/" target="_blank"> here</a>
Knife kills are instant in this game just sneak up behind an enemy for an instant humiliation kill or get the enemy when he is reloading. My memory is still correct and I owe you a knife kill from BF2 Claw (The Hammer never forgets).
I tend to favour the Hardcore team death match version of the game. This takes off the UAV until your team earns it and needs less hits to take a player down. On the normal game I could put a full clip into the enemy and not kill him
Since playing COD 4 I haven't played any other game. My favourite map is Overgrown and I tend to play on the <a href="
http://www.gametracker.com/server_info/ ... p_players/" target="_blank">Yorkshire Lads Hardcore server</a>
I enjoy the game and haven't regretted buying it.
I just wish a few more clan members would play COD4.