Risk: Factions

A short note to share our experience. When we boosted for this, the achievement didn't pop for a game where the winner was not the host of the game. But for the other five games where we gave win to the host, everyone got this achievement. Hope this helps.

EDIT:
With a help from Van Uden, adding some notes about our session.
* We made sure that the person winning wasn't the only active player.
* As for settings, we did in factions, quick game on the 5 players classic risk map.

EDIT part 2:
This solution mainly describes the situation just after this game was released. As you would see in the comments, there might be other ways for getting this. I'm not going to verify these (whoever want to verify how to unlock a 5 player achievement? ), but all concede method would worth a try, I believe.

The method is to get 5 players together and set up a game and it should follow this outline: Factions, Ranked, Command Room, Random, Quick Games.

Every player should place their first capital, then once that happens go another turn and place your forces. Once that occurs three people should quit then followed by the host and then the person who is going for the achievement should stay behind and then the achievement should unlock.

The way explained above is exactly like the way that the boosting session eventually did it because when we followed the way GLORIXJIM had described it nothing happened. Only after adjusting the method by making sure people place down troops then quit did we get our achievements.

We boosted for this achievement tonight, and quitting does work for this achievement.

Set up 5 player games with Factions, Ranked, Command Room, Random, Quick Games.

Now after placing the first capital, everybody quits out EXCEPT the host and the achievement winner. Last to quit should be the host and voila, the last gamer standing wins this achievement.

Thanks to The Other Guys that boosted tonight!

This guide is if you are trying to boost.

After trying this out with 4 other guys, the various methods of using Concede did not work for us!

My advice is to play the game aiming to get 3 objectives to win by doing the following,

1. Let the person who is after the achievement host (I will refere to the person getting the achievement as the host from now on).

2. Setup up a 5 player, Quick Match, Random on the LIMBO map. (Although you can guarentee objectives if you use manual, it takes a lot longer than just playing through from random!)

3. The host first wants to gain control of the Temple, if possible, other players should move their units out of the way or attack each other to leave a 1 in each territory.

4. The other players should stack all their units into a single territory (not on the Temple!), so that the host can capture them using Convert Territory (the Temple ability). The host can then use these units to attack the remaining territories.

The 3 quickest objectives to aim for are:
Control Deaths Door, (the square shaped continent below the temple)
Control 2 continents, (the Temple and Deaths Door count)
Control 20 territories, (easily done when following part 4)

Though controlling Barracks or Crypts may be faster than 20 territories depending on your starting positions.

It should take around 15mins PER PERSON (if all players are paying attention and know what they need to do).

You can also speed up the gameplay by using X to attack (quick attack) and pressing B to skip the unit count at the start of each turn.

As everyone has said, getting this achievement legitimately is near-impossible, since anyone losing will inevitably concede the game rather than wait for you to beat them.

There are actually two ways to boost this. One is by using five players, as has been said, ensuring the winner is the host of the game each time.

This can also be done with just two players though, if you can't be bothered assembling a group of five. Set up a ranked five player game (normal rules are probably best, not quick), get your friend in, wait for three others to join, and work together against the other three. Remember - the person going for the achievement needs to be host.

Sure, it takes a little bit more effort in-game, but if you work together to get you the achievement, taking out other players in the process, players will start quitting in no time. And since the final player won't quit (since they're helping you!), the achievement will actually pop.

Took about 20 minutes to get each of us the achievement this way, including time spent waiting for players to join. Using five players is probably faster and easier, but I thought I'd throw this out there for anyone with a mate who has this game, thus saving the need to organise an entire for it.

****SOLUTION TO THE ACHIEVEMENT*****
IF YOU ARE HAVING TROUBLE READ THIS SHORT GUIDE.
Hope this helps save some people pointless time wasting! :]

To all those who have trouble unlocking this horrible achievement, After hours of boosting with a group on a TA session (Following the countless other guides that all basically say the same thing above) we found the complete solution to unlocking this.

-You can play as a group of 5 of less (including randoms)
-If a random leaves or if the other 4 players drop out you CAN get the achievement *BUT* you must defeat all of those inactive players! (You must destroy all their spots on the playing field - You will get a message notifying you when they are defeated).
-The fastest way to win is to get 3 Medals, Instead of eliminating all the enemy spots on the playing field.

If you need me to clarify on anything or correct something or have any questions just send me a message on TA or comment below! :]

This is a guide to boost this achievement and wins:
-When its buggy using the quit out method its because they are from different countries.
-If the quit out method works you want to have someone not getting the achievement host. Then you make sure everyone places there capital and the person going for the achievement takes over at least one country during his turn. Once everyone has had at least one turn, you make sure that it is the person going for the achievement's turn. Now the 3 other non-hosts quit, then the host quits, and viola! achievement unlocked for the remaining person.
-If this does not happen then you have to do it the slow way. Have the achivement getter host a game and then let them win. It is quickest to do the objectives in case you were wondering.

Any suggestions, let me know. I threw this together because this is what has worked for me in getting the RISK achievements and I want to help everyone else. I know other strategies will work this is just how I boosted.

Hey all, I have 2 accounts and am more than willing to assist. I'm leaving this guide because I was there, delisted and not so delighted. I have a friend who can be a third, J hart 52.
I'm GMT -8, he is GMT -5; for timing.

Please only ask for help if you are willing to leave a comment below saying you will also assist. Let's work as a team people.

I use a dual box exploit, and you can too. If you have two xbox 360s you can make a second gold account and play 2 consoles with only one copy. If you need further explanation please feel free to ask me, it works for every game.

Please stop spamming people who gave up and are self centered for this, I thought I was the last to earn this but boy was I wrong.

Message sobadnomad and/or J Hart 52 on the Xbox app, not on the site and I'll see you through a successful 100% of the best risk game ever lost to time. If you message me on this site I may never see it, I hardly use the feature.