When going for platinum on a mission do not try to do it right off the bat. Instead play the mission through at the Agent difficulty, taking it easy and getting the lay of the land. Then, after you're intimately familiar with the level, and has already scored gold, tackle the platinum score. Besides, you must first get gold on a mission before you can get platinum.
Every now and then, when in combat, activate Bond sense and switch to the sleeper dart gun, then shoot an enemy, and switch back to another weapon. Unlike other weapons, which typically take more than one shot, or require Bond to aim at a particular part of an enemy, the sleeper dart is a one-hit-one-dropped weapon. Besides, by using the Bond sense like that, Bond is able to take out enemies pretty quickly while risking little.
Sure, sometimes enemies that are in a shooting standoff with Bond will charge from their positions toward Bond, allowing him to pick them off, but usually they will stand still. As a result, if Bond is waiting for some enemies to make a move, or is just waiting around twiddling his thumbs, then he can usually set forth a Q-Spider to do the job for him. Besides, when there is a group of about four or five enemies, or more realistically two or three, the Q-Spider can make short work of them.
This isn't supposed to be Spiderman, but nonetheless Bond does have some special senses that can be used in-game. While generally this can help Bond target enemies or shootable items, as is demonstrated in the MI6 Training, the Bond sense can also pause time, in effect, allowing Bond to switch weapons and attack enemies while being able to ignore what is going on around him.
In other words, every now and then when you a moment or two to plan his next move, enter Bond sense. At this point he can choose the best weapon to use in order to continue, and pick his next target. In a pitched battle utilizing Bond sense in this manner can give Bond a decisive edge, even if he is surrounded by enemies.
There are times to run and there are times to go slow. Generally one of the biggest problems that people have is that they run ahead and get shot up, when, had they stuck back and hugged walls more, they could have lived. On the other hand, time is sometimes of the essence. When this is the case run at an enemy while shooting, half the time Bond will be able to take several enemies out in this manner while taking very little damage, if it is done right. Fortune favors the bold.
