As it was mentiond before, if you already completed the game once , you are ready to do it again on the hardest, 007 difficulty. It's really not a big challenge.
- The most important thing is to always stay in cover, and move forward in small steps. If you are ambushed, go back as much as you can and slowly eleminate all enemies. (Feel free to use your map, and locate them)
- Take your time! There are no time limited missions, only in a few chapters, but they are not so complicated, after 1-2 retries you will do it.
- Don't waste your ammo, because at some parts there are a lot of enemies and you will need every bullet, if you cannot move forward to pick up the enemy guns.
- Use blind shooting only, if the enemy is not behind cover, or he is in clear sight.
- In stealthy maps, use your map, because it shows you where the enemies are and where they going. It is very useful, but keep in mind that the game will still running while you are watching your phone!
- If you can; avoid the red flashing cameras, or hack them (follow the wire and use the X button on the small, yellow box) to avoid further gunfight.
- During a QTE, grab a pen and a paper and write down the buttons you have to push/smash. Although the sequence not always the same, but most of the times it's very similar, so you can learn most of them. Because on 007 you have a very limited time to react, it's not as easy as you imagine it.
- While hacking, i suggest you to use one of the analog stick instead of the D-Pad, because the old controllers D-Pad is a P.O.S. and you probably gonna miss it a lot of times. (Thankfully, if you fail it, there is no alarm, so you can retry as much as you want)
There are some bosses which needs an exact strategy to defeat them (for exaple the helicopter on the roof) Make a few tries, build up a good strategy, but don't rush it, because you will fail. Let me share a few tips with you:
- Opera house: Go stealthy, avoid cameras, kill guards one by one, and you only have to fight at the end of the map. You will thank for yourself to not alert the gurads.
- Sink hole: At the helicopter wreckage: Don't use the turret gun! Exit from it, and get behind cover (the tail of the helicopter is a great position) Kill everybody slowly. There is an ammobox on the right, so you don't have to worry about ammunition.
- Shanty town: All i can recommend to move very slowly. Especially at the start, where is the truck shooting at you. When you meet Carter, pick up the 8-CAT machine gun and move back where you came from. Carter will do the dirty work instead of you, but take care about enemies who rushing you (especially from the left side, but also cover the roof, where the ladder is) There rest will be a piece of cake.
- Science Center Exterior: Until you are on the ground, just take care about the spec ops guys. Be careful, they are on the balcony too! When you reach the roof, another bunch of bad guys gonna come, and at the end of the level, you have to fight with a chopper. Pick up the grenade launcher (it is in a golden case, somewhere in the millde part of the map) and after you hit the checkpoint, get behind cover. If you good, you can hit 2 times the heli before it goes behind you. Then run to the right, crouch under the little stairs and wait for the heli to go back his previous position. (Be careful, a guy will come from the left where the pipes are, kill him!) After the heli changes position, run back behind that fan thing and shoot it again. As i know, you only have to shoot it 3 times, and after a while it will fall down automatically. To make sure, hit it as much you can, but until it goes down, change your position as much as you have to!
- Miami Airport: As much as you can, go stealthy. At the boss fight, just aim to the red barrel on the right (which is behind 2 blue boxes) and when the guy is near it, shoot it.
- Casino Royale: Same thing. Go stealthy until you reach the air vents. When you are in the pool area, stay behind the desk and shoot everybody. Most of them at the other end of the pool, you can watch their movements in your map. If you go toward, some of them maybe will rush you, probably from the left side, so be careful. When you reach the ballroom, don't enter until you killed the guys. They are coming in two groups. Eleminate them. After it you can go inside. The game will say to survive the ambush, but honestly, there will be only 4 or 5 bad guys you have to take care about, so don't worry, just watch out for the explosions near you.
- Barge: First i though it is very hard, because the bad guys wanna catch the woman, but i was wrong. Take your time, listen to the guy who is guide you, and shoot the guard when they are standing in one position, or hiding behind cover. They just only grab the woman, so you will have enough time to aim and kill them. At the end, be careful, move slowly and fall back, because a lot of enemies gonna rush you.
- Venice: For me, only the first fight was hard. That balcony stuff is a maze, enemies are coming from the bottom and top, so i camped in the first stair (where you enter the building) and slowly killed everybody. When you go down, another bunch of bad guys will attack you, so look both of your left an right side! (Here, you really have to save your ammo, because if you rush in for weapons, you can easily get killed!)
- Echo Hotel: The first 2 area in this level a big parking lot. As you enter, go to the left in the ticket post, and take cover next to the door. Some enemies might come close, feel free to shoot them with blind firing, but you can easily kill them from this position. Operate with headshots, becasuse there are 5 waves of enemies, and i suggest you to always run back to the post and wait for them until they come at you. If you want, you can try lure them out, but sooner or later all of them gonna come at you. On the 2nd parking lot, there is an 8-CAT, grab it. The last fight is a really hard fight. First time i ran to the left and took cover in the little black corner, but it's a very bad position, because bad guys from the balcony can easily kill you from left side.
Here what i did: I grabbed the 8-CAT, threw a grenade to the far right corner of the room (at 13 o'clock as you enter into the room) and killed every bad guy with the LMG. It's really accurate, after 2-3 times i could easily shoot all of them. From this position, you are safe from the balcony guys. You can wait for them to change positions, or if you are brave enough, you can change position, but i don't recommend it. After you killed every one of them, just shoot the 2 gas tanks on the second floor and bamm, you beat the game.
Good luck!