For everyone that wants to boost the mp achievments on gears of war 1 here is a guide to help get them as quick as possible. it will still take some time but you will see results after a 
while. All the achievments are on ranked.

Chainsaw / Grenade tags / longshot / Headshot / Torgue Bow

Gamemode: warzone

Game map: War Machine
No rounds: 19 (37 in total as 1 team will have 18 and the other will have 18)
Time limit: 10

No players: 6

Chainsaw / Grenade tags

You need to set up 3 teams of 2 players 1 locust and 1 cog. For chainsaw and grenade tagging get 1 team of 2 to meet at the grenades on both sides of the map(cog follow red or yellow depending on what side you spawn, locust follow light blue or dark blue depending on spawn location). then when you are both there 1 
player picks up the grenades while the other one has the lancer equipped then the player with the grenades tags the player with the lancer. as soon as the player with the lancer is tagged 
press b straight away to start the chainsaqw then you should both die 1 by grenade and one by chainsaw. By the end of match both of the 2 teams of chainsaw and grenade tag should ahve about 
30 ish kills each so should take about 4 matchs to get the 100 kills for the weapon. For all 4 players to get the 2 achievments you will need to play 8 matchs and you switch on the last 4 
rounds so if you were chainsawing you grenade tag and vice versa.

longshot / Headshot / Torgue Bow

For these achivements you will need 2 people which makes up the 6 players in the match. You will both be getting all 3 achievments at the end of the process due to swap every round . The 
way to do it is you get 1 player grab the torgue bow (purple line) and the other player grab the longshot  (pink line) then you both meet in the middle of the map. Then the player with the longshot lines up the 
headshot on the player holding the torgue bow. Then the player holding the torgue bow fires the torgue shot into the body of the player holding the longshot. As soon as the player holding 
the longshot is tagged with the torgue shot you will need to shot the longshot and get the headshot. that way both of the 2 players will die but you will both have a kill for the weapon you 
were using. on the next round you will need to swap so if you used the longshot then you now need to be on torgue bow and vice versa and use the exact same method as above. at the end of 
the match you should both have about 30 ish kills which will be about 15 kills with torgue and 15 kills with longshot as well as headshot. it will take about 7 to 8 matchs for both of the 
players to get the longshot, headshot and torgue bow achievments.

Hammer Of Dawn / Boomshot / Execution / Pistol

Gamemode: warzone
Game map: garden (must have the 2 free dlc packs on the marketplace)
No rounds: 19 (37 in total as 1 team will have 18 and the other will have 18)
Time limit: 10
No players: 8

Boomshot / Hammer Of Dawn (you will also get clusterluck achievment)

for these 2 achievments takes a lot of time. you need 8 players on the map and only 2 players getting kills to start with. All 8 players will get kills by taking turns after both the 2 
round counters show 5 each. the way you get the kills everyone runs to building in front of the boomshot 1 locust goes to get the boomshot and 1 cog goes to get the hammer that leaves 3 
players on each team being sacrifical bods. The 6 players that are being sacrifical need to stand together in front of the building. Then the locust holding the boomshot shots and kills all 
the cog in the group. then the locust who just shot the boomshot joins the other locust at the spot. Then the cog holding the hammer of dawn shots all 4 locust at the spot and wins the 
round. Then on the next round instead of the locust shooting first the cog shots first then joins the rest of the cog and then the locust shots and kills all cog and wins the round. as soon 
as both the first locust and cog have got the counter to 5 you swap the players to the next cog and next locust and repeat the same above. when there has been 3 cog and 3 locust been the 
counter will be at 15 each then it will the turn of the last 2 you carry on till the counters reach 18 and 19 then the match will end. at the end of the match all the cogs should have about 
30 ish kills with the hammer of dawn and the locust should have about 30 ish kills with the boomshot. for all 8 players to have both of the achievements when the locust have the boomshot 
achievment and tyhe cog have hammer of dawn achievment you carry on but swap sides so if you were locust you now go to the cog side and vice versa that way everyone will get the 
achievments. it will take roughly 4 to 5 matchs to get the achievment for the single weapon and 9 to 10 matchs to get both achievments for all 8 players.

Execution / Curb Stomp

for getting execution kills you use the same idea for boomshot and hammer but instead of gwetting the 2 weapons you stay with the lancer. the way to get the kills you all meet up inside the 
building where the hammer of dawn is and the first 2 people getting the kills down the 3 of 4 locust (the 4th is the other player going for the kills) when the 3 locusts are downed you curp 
stomb then all. then the locust is doing the same with the other 3 cog then once all the other 6 players have been killed with executions then the cog downs and executes the last locust to 
win the round. When the next round starts you carry on exactly the same except when it gets to the last cog and last locust the locust kills the cog to make it that both counters are 1 
each. Carry this on till the first players reach 5 each then swap to the next cog and locust and repeat the process till everyone has a go remembering that the last cog and locust after the 
counter gets to 15 that they will not get as many kills due to the counter being 18 and 19. when the match has ended everyone should have 30 ish kills each. it will take about 4 to 5 matchs 
to get the execution achievment for all 8 players

Pistol

for getting pistol kills you use the same idea for executionyou just swap to the pistol. the way to get the kills you all meet up inside the building where the hammer of dawn is and the 
first 2 people getting the kills kill the 3 of 4 locust (the 4th is the other player going for the kills). then the locust is doing the same with the other 3 cog then once all the other 6 
players have been killed with pistol then the cog downs and executes the last locust to win the round. When the next round starts you carry on exactly the same except when it gets to the 
last cog and last locust the locust kills the cog to make it that both counters are 1 each. Carry this on till the first players reach 5 each then swap to the next cog and locust and repeat 
the process till everyone has a go and get there kills remembering that the last cog and locust after the counter gets to 15 that they will not get as many kills due to the counter being 18 
and 19. when the match has ended everyone should have 30 ish kills each. it will take about 4 to 5 matchs to get the pistol achievment for all 8 players.

Mix it up / Around The World / Can't touch me

Game mode: all modes
Game map: all maps
No rounds: 1
Time limt: 7
No players: 6 min 8 max

the way to get these 3 very quickly is to get a full party going then set the requirements and go through all the maps 1 after another but on each map let only 1 side win (thats nets the 
win 10 ranked in a row achievment). then after you have gone through all the maps (win a ranked on every verses map) for the cog first. repeat for locust so that both teams have the around 
the world and cant touch me achievment. then for the mix it up you need to play 1 round on every game type so for example cog win on execution, then warzone etc till the achievment shows 
up. then repeat the process for locust so all 8 players have all 3 achievments.

Revives

Game mode: warzone
Game map: gridlock
No rounds: 19
time limit: 10
No players: 8

for this it takes a little bit of time and planning. you get all 8 players to meet in the center of the map lining up in 2 lines in front of each other (red dots for locust blue dots for cog) so for example:

Locust -------- cog
Locust -------- cog
Locust -------- cog
Locust -------- cog

then the first cog shots the locust down then the 2nd locust in the line revives him. then the first locust who got downed then downs the cog that shot them and downs them then the 2nd cog 
revives the 1st. the the 1st cog downs the 1st locust again and the 2nd locust revives the 1st locust again. then the 1st locust downs the 1st cog again and the 2nd cog revives the 1st cog. 
when both the 1st locust and 1st cog have been downed twice the move to the back of the lines and then you repeat the same process with the 2 new people 1st down 1st 2nd revives and so on. 
when all 8 players have been downed twice each. to finish the round the 1st locust the kills the 1st cog then the 2nd cog kills the first locust then the 2nd locust kills the 2nd cog then 
the 3rd cog kills the 2nd locust then the 3rd locust kills the 3rd cog then the 4th cog kills the 3rd locust then the 4th locust kills the 4th cog to end the round. when a new round start 
you repeat the same process of downs and revives till everyone has 2 downs and revives then if locust won the previous round then the 1st cog kills the first locust at the end then the cog 
will win that round.

Locust win

1st locust --- kills ----- 1st cog
2st cog ------ kills ----- 1st locust
2nd locust --- kills ----- 2nd cog
3rd cog ------ kills ----- 2nd locust
3rd locust --- kills ----- 3rd cog
4th cog ------ kills ----- 3rd locust
4th locust --- kills ----- 4th cog

Cog win

1st cog ----- kills ----- 1st locust
2st locust -- kills ----- 1st cog 
2nd cog ----- kills ----- 2nd locust
3rd locust -- kills ----- 2nd cog
3rd cog ----- kills ----- 3rd locust
4th locust -- kills ----- 3rd cog
4th cog ----- kills ----- 4th locust

carry on the same process till the match eneds at the end of the match everyone will have about 35 ish revives. to get 100 revives you will need to play about 3 to 4 
matches and then the achievment should show up.

Don't hate the player

game mode: warzone
game map: any
no rounds: 1
time limit: any
no players: min 6 max 8

for this all you need to do is be the highest score at the end of a match so to make it easy you get a full team and then the person that needs the achievment kills the entire oppostie team 
and the match will end and the achievment should show up. repeat till everyone in the tema has it you will need to re host the match each timwe. there is unfoortunatly no quicker way to get 
this achievment.

I hope that this small guide will helpe people boost the multiplayer achievments in gears of war1.

any question or if i have missed anything

message markeebell on xbox live or on gowportal.com.