Be-aware that as of February 2016 the online for this game is still popular with randoms and boosters alike so you may have some conflicts when you are trying to go for this achievement.
Firstly before you go forth and get this achievement done, it is recommended that you work on the other online achievements first as all of the progress will count towards this achievement, with the exception of the Survival Game Mode and Player/Private Matches.
In order to get this achievement, you will need to get a total of 18060 XP across all of your Ranked Multiplayer games which is Level 43. Private & Player Matches do not count towards the achievement.
Whilst you can work on this achievement in multiple game modes, it is recommended that you use the Alien Glitch and work on this achievement in the Domination game mode.
In order to start-up a Domination match though, you will need a minimum of 8 people including yourself. You will then need to assign 2 people that are in the same "region" to host Group Parties that are in the game. They need to be even so if you've got 8 people it needs to be 4 each side or 5 each side for 10 people etc.
If people cannot join these groups then they will need to either return to the XBox Dashboard and reboot the game, switch off their consoles and turn the plug off for 10 Minutes, Disconnect from their Internet Connection on the console or reset their routers.
Once everyone has been paired up and the group leaders are ready for searching, they need to go into Ranked Match, Quick Match, choose Domination and then select the amount of people they wish to look for. You have a choice of "Any", "8", "12" or "18". The way it works is that if both teams we're to search for "Any" then a minimum of 8 people would be needed to start the match. But you could have a maximum of "18" that can join the match in total before it loads up. If you search for "8" then you are looking for a game with just 8 people only and if you have 4 people in each lobby when you search, the lobby will lock and prevent randoms from joining since 8 is the magic number. It would be the same if you we're to search for "12" or "18" people matches, but in truth honesty if you want to fulfill everything in this game mode within the time limit, 8 is the best amount of players to go for.
Now the online matchmaking for this game is extremely difficult because when you search for matches, you will have no idea if you are searching with your boosting friends or not and you won't find out until you are on the lobby screen. You can however keep in contact with you and your boosting friends by saying how many people are on their screen when searching. If it's the same it will likely be you've all found each other. If you have searched under the "Any" category, after a short period of time the game will start counting down and reducing the amount of players need to start the match. Randoms can join your match still and they can do so until the match is loaded. When the game reached "0 Players Required" you will have a lobby. If you have searched for "8", "12" or "18" then the lobby will not load up until you have that exact amount of players in the lobby among all of the teams available.
Tip: If both group leaders are having a hard time finding each other it is suggested to give the player who searches first 10+ seconds before the other team searches for the group. In addition if one group searches for "8", the other group may have to choose "Any" instead of "8" as well in order to find them.Now when the lobby loads, both teams will be placed separately and the game will then decide who is going to be Aliens & who is going to be Marines. This cannot be changed in the lobby at all as it's random base. Your only possible chance in changing the teams to make Aliens >> Marines & Marines >> Aliens is to back out and both teams re-search again for a Domination lobby.
When you have the teams you need in the lobbies you then have 30 seconds to vote on maps and your skins for the characters. For map-wise I recommend Refinery, The Gateway or Ruins. You must "AVOID" the Temple or Pyramid map. These maps are too complicated to search and play on. It's optional if you want to have the Jungle map but I cannot provide details on the whereabouts sources are.
Now here is the important part. If everyone's ready they need to press the
button to ready up and then they will have a tick on the left side of their gamertag. If everyone readies up, the match will load instantly and the 30 second timer will stop. This will load up the match and you will also prevent random players from joining it from here on out. This does not apply though if you have searched for "8", "12" or "18".
Boosting MethodA Domination Match lasts for a total of 60 Minutes. The original goal of the game is to capture the control points and score a total of 100 Points for a win, or the first person on a team to score a total of 100 Kills wins the match for the team. You will not be doing any of the above as you will be boosting. Accidents can happen and team members can easily capture control points by mistake. When this happens simply get a player on the opposite team to stand at the control point until the announcer says "Control Point Neutralized". Move away as soon as she says that.
Note: I must advise that if you are the group leader on either side of the teams, you are known to be one half of a host and you cannot do the Glitches explained since you will not be able to glitch the Alien like the other non-group leaders can do. This means that if you are the group leader, you cannot do the Alien Glitch like the other team-mates can do if they are on the Marines side.Now as soon as the match is loaded, quickly decide among everyone who is going to do what during the match. It is always a good idea to have at least one or two Marines working on the kills and letting at least one Alien run off and get some kills as well. Whilst a Domination match lasts for an hour, it in reality will go quick and there is a possibility that not everyone will not be able to get kills or XP, depending upon the map and how productive the boosting is. Do not blame yourself or anyone else during the matches. We never managed to get all 6 of us as a team XP in every single match we did and that included dummy accounts as well. It's all about co-ordination, team-work and communication.
Marine - Not The Host & Doing The GlitchIf you have been chosen to go and get your kills you can successfully perform the glitch.
It is recommended that you run over to find an area that the Aliens will easily spawn so that they can just run up and get killed easily by yourself. The glitch may take a bit of time to get used to and it may not always work perfectly. This isn't always your fault though as it can be an issue with the game.
Now when you have a partner who is an Alien, you will need to first equip your Pistol if you haven't got it by pressing
and then aim for the Aliens head that is looking right in front of you. When you are ready shoot the Alien 3x times in the head with the Rapid-Fire that is done by pressing
x 3. You then need to quickly swerve yourself around the Alien and shoot it twice in the elbow or arm/chesty area by pressing
x 2. Finally you need to quickly press
to melee the Alien - killing it! If done correctly it is possible that the Alien will start to glitch and shake around the area like a rag-doll. When this happens you must rapidly press
and "ONLY"
to constantly melee - spamming the Alien. If you hear the Alien scream it will count as an additional kill giving you extra XP. The more it screams, the more XP you will get for that single kill. With this method applied by default you can get around around 2+ melee screams with a typical amount of being 5 screams in 1 standard kill. If you are lucky you may be able to get 6 or 7 on some standard kills you do. The highest one of us ever had was 9 screams in a single kill.
It doesn't always work though. Sometimes when you kill the Alien it will just flap around or lay flat and when you melee it won't scream. Pretty much if it doesn't scream when you whack it, you get no extra XP as it will likely be a plain, simple kill and it's pointless to continue as you will be getting extra XP on that kill.
The Glitch will however not work though if you don't kill the Alien with a single melee attack. Melee attacking it more than once will likely avoid the glitch and will just kill the Alien normally. You have to be quick at damaging the Alien because an Alien can re-generate it's health to it's original state after a short while of attacking.
Importantly though you must not rotate the
in any direction when you've killed the Alien as it's doing the glitch, even though you feel as though you should. The reason is you have to imagine that the Alien's body is still laying dead in front of you when you attack with
constantly and a glitch never happened. Moving the
in directions will make you lose your spot and you will lose out on melee-ing the Alien for extra XP.
Once the Alien is dead, rinse and repeat the above method when you find another Alien or if it comes back to you. Make sure you reload your weapon on each Alien you kill by pressing
. Your Pistol has unlimited ammo, but you need it to be reloaded and ready on each Alien you attack. You are only allowed a total of 99 kills because if you get 100+ you will end the match.
Marine - If You Are The HostIf you are the host and a Marine throughout the match, you cannot do the glitch so if it's your turn for XP, you can only shoot and kill Aliens for XP with any gun you want. Just simply get the Aliens to run to you and fire away with any weapon you want until you get 99 kills.
After 99 Kills As A Marine In The MatchOnce you have 99 kills, you will be cannon fodder for the rest of the match and it is suggested you help the people who are Aliens get their kills since they will likely have helped you at the start.
At the end of the match the Marines who have done the glitch with 99 kills will likely get around 1600 - 2500XP+ depending upon how well they performed the glitch. A Marine doing 99 standard kills (host) will likely get around 400 - 500XP at the end of the match.
Aliens - Claiming KillsIf you are the Alien, you cannot do the glitch and you can only perform normal kills against the Marine. However we've discovered that you get more XP if you do "Executions" on the Marines rather than simple kills.
When it's your turn to kill, run over to the spawn area where the Marines are based and claim your 99 kills. The way you attack the Marines for executions is by either pressing the
once and then pressing
for an execution, or approaching the Marine from the back and then pressing
when prompt to execute the Marine from behind.
Once you have 99 kills, you will be cannon fodder for the rest of the match and it is suggested you help the people who are Marines get their kills since they will likely have helped you at the start.
At the end of the match the Alien will likely be able to achieve 500 - 600XP with just standard kills, whereas if every kill is an execution they will be able to get around 700 - 800XP+ per match.
Planout For BoostingI would suggest when boosting that you have at least 2 Marines working on the glitch for XP until they get 99 kills and have at least 1 Alien run over and kill the Marines that are not doing the glitch and sitting idle until they get 99 kills. If you have dummy accounts it will speed up the process dramatically and help you towards getting this achievement done quicker, even though you would only be able to control 1 account at one time. We as a group had at least 4 - 5 dummy accounts around a flexible basis.
If you need to step away from the actual game or you have permission to take a break, then you can do so, because Idling in this game does not get you Kicked for Inactivity. With this in mind, should you be using dummy accounts, they can be left idle for the whole duration of the match, without being moved at all.
So a fast way is to have 2 Marines run over to the area where the Aliens spawn so that the Aliens can quickly run up and get killed and then have the Alien who is getting the kills to run over to the Marines spawn point and only kill the ones that are standing still and doing nothing. Once the 2 Marines & the 1 Alien have claimed 99 kills, they can swap over with someone else whenever they are finished.
It is likely within an hour that 2 Marines will be able to achieve 99 kills and all the Aliens will be able to get 99 kills each since they will kill faster than a Marine doing a glitch, however you may be able to achieve more or less during a match.
Map Locations For Marines & Alien Spawn PointsRefinery: Send the Marines doing the glitch/kills down to the bottom section where the slopes are on either side and get Aliens to meet here to get killed. It is a dark map but it's the smallest among all of them in the game. The Alien will have to go up on the second floor in order to find the idle Marines to get kills.
Ruins: Send the Marines doing the glitch/kills down to the Temple part with some hills. The Aliens spawn at the top, on the corner where the Sniper Rifle is and down the bottom nearby the river. The Alien will need to go down past the river and then up a hill on the right side. Once they've climbed up to the top they should see the Marines spawning around this area and down the back bit near the other-side of the Pyramid door opening.
Gateway: Send the Marine doing the glitch/kills down to the cave where Capture Point I is. The Aliens spawn around this area. You can send an Alien to the compound area to get kills on the Marines. The Marines spawn around this compound area only. This is the best map for boosting among all of them in the game. It is quite regular when we did it.
Avoid the maps Pyramid & Temple. Pyramid has a lot of obstacles and opening and closing doors which are annoying to pass. Temple has spawn points for Aliens & Marines that are right close to Control Points I & II allowing both teams to easily capture the control points by mistake for points.OutcomeThe time duration for boosting this achievement depends upon how well the matches play out for you and your team. Also as said above if you have dummy accounts, that as well can speed up the process. It is known to take around 10 - 25+ hours to get this achievement.
Once you have reached Level 43 with the required amount of XP, the achievement will unlock as soon as the last match you need is complete. Good luck in getting the achievement.