Quantum of Solace

This achievement is simple, here we go.

1. At the beginning of Eco Hotel, you will be running into the garage. A car will come crashing out, you will need to avoid it. Then, run through the garage with your pistol drawn, and you will hear shouts of the enemies. You will see one running away, start firing as fast as you can at him. Once he is dead, pick up his weapon, change to it, and take cover.

2. There will be many more enemies waiting for you. All of them have the same gun that you have, which is pretty powerful. Try to kill all of them while hiding behind something. If you hear a beeping and a red flash, dash to another hiding spot. Once most of them are dead, run into a room that is in the north east part of the garage. Kill the rest of them.

3. Head west, and the enemies will shoot down the baricade. Do the exact same things as you did in step 2, but this one will be easier.

4. From here on out, everything is extremely easy, and you should be able to figure it out by yourself.

I didn't find the garage part too difficult, even on 007. Just find a good place to hide and when you see the red flashing lights, just dash to another spot. Then dash back.

The hardest part for me was near the end when you're in the circular room, after the big explosion. There are guys upstairs and downstairs and not a lot of safe cover. You can blow up some stuff to help out but there will be more guys.

I was dying a lot (on 007 difficulty you die after a couple of shots) so what I did was take out the first few guys that I saw. Then I made a lucky run to the back right of the room where there was a kitchen area. You'll see pots and pans and a few counters to hide behind but be careful because there are 3 or 4 guys back there. You're going to be running right into them. I just got lucky and took them out quickly before they could kill me. As soon as you can, hide behind the counters.

You'll have a decent view of the end of both balconies from here depending on where you're looking and you'll be able to take a few guys out. The key here is to be patient. Take out the remaining guys downstairs first. Use your live map to check.

Then you have to take out the last few guys upstairs. They might not move for a while. Keep looking at your live map for their locations. If they don't move, just get up and move around a little. Eventually, they all moved to the ends of the balconies for me and I was able to take them out while in cover.

After that part, you're pretty much home free.
Enjoy!