Defeating Cobar
Run and the grab the missile launcher from the supply depot at the bottom left of your screen While hiding behind the concrete block next to the depot throw grenades at his machine gun This enables you to lock on to his missile launchers which cause the most havoc In order to lock on to one weapon at a time hold L R while firing or throwing grenades Once enough damage has been done with the grenades his missile launchers will turn so that you may see the holes You can now lock onto them From this position shoot the left one first Fire two rockets as fast as possible and make sure that you do not miss If you miss restart After both rockets hit the left missile launcher you must run around a bit Make sure that you reload after the first two shots In between the rockets that he shoots at you aim at his right missile launcher and get both shots off This may be easiest from either the tall cement pillar or the small cement block on the right as neither barrier breaks down after wear In any case do whatever is needed to kill the second missile launcher You may relax a little bit now as he cannot hit you if you are behind one of the cement barriers Either grab the sniper rifle or the crossbow that you brought with you if over ten shots remain and go to the cement barrier by the left supply depot While holding L R hide behind the barrier and focus on the mine thrower on the top of the machine or the machine gun that is tearing you up Time your shots so that you are hiding while he is shooting and you are shooting while he is reloading Try to destroy this weapon as fast as possible It may just happen that the Spider Mines start climbing out before you are finished with the weapon at hand As soon as you see the Spider Mines climbing out run to the supply depot and get the assault rifle or counterpart and immediately lock on to the spider mines that are coming towards you Only about five are released at a time but you must kill them while they close to the Boss so that they do not explode near you Tap L2 to roll out of the way if they are about to explode near you Try to kill the Spider Mine hatch now before more come out After you kill the left run to the other side as more Spider Mines will also come out of there Repeat the previous step then kill off this side as well Go back to the left cement barrier refueling any life that may have been lost If you are hiding from the machine gun get directly behind the barrier If you are hiding from the mine thrower get to the back right corner of the barrier but directly up next to it Get out of the way of the explosions or bullets Time your shots in between his and take out the remaining guns
Unlockable Abilities
You can access the ability selection screen by pressing square on the weapon selection screen Abilities are unlockable bonuses that let you do certain things like carrying 3 grenades or having 50 more health You can unlock these abilities by aquiring a certain amount of points Poins can be collected by completing challenges
Unlockable Extras
In order to unlock some of the extra content you must do the follwing
Unlockables
Fifty Percent More health Acquire 300 Points
Faster C4 Placement Acquire 100 Points
Carry 3 Grenades Acquire 20 Points
Carry 3 Smoke grenades Acquire 140 Points
Carry 3 Syringes Acquire 60 Points
Carry 4 Pressure Mines Acquire 220 Points
Carry Unlimited ammunition Acquire 480 Points
Better Close Combat Damage Acquire 260 Points
Faster Trip Mines Disarming Acquire 180 Points
Fifty Percent more Health for Buddy Acquire 40
