Halo 4

Halo 4

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2,000

26-34h

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One Man Army

One Man Army

In matchmaking, got four consecutive kills with the Rocket Launcher without dying.

27

How to unlock the One Man Army achievement in Halo 4 - Definitive Guide

I have just unlocked this as of 20/08/2013.

I played on 'Action Sack' playlist and selected the 'Rock 'n' Rail' game type. This game type spawns you with unlimited rockets and unlimited rail gun ammo.

This achievement pops in game once you have achieved 4 kills with rockets without dying.

I managed to unlock this achievement without purchasing the Bullseye DLC, whilst playing online with friends.

As everyone uses rail guns and rockets, this can depend highly on the amount of skill you have. Though if you can fill the 8 spots needed for the 'Action Sack' playlist, you can boost this with little trouble to no trouble at all. You can use extra controllers or guest accounts. Meaning you could only need 2 people with 4 controllers.

Good luck unlocking this achievement!
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20 Aug 2013 04:20

17 Comments
I can confirm u don't need dlc for this and can use multiple controllers. +1
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By STx SHROOMS on 20 Aug 2013 04:27
Beware if your using extra controllers you can get a ban from earning xp i had a boosting session with a couple guys and used a extra controller after a view matches the game told me that i was banned from earning xp so i have to wait a couple days to play halo 4 to get my 25 challenges
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By xXCrazyXx BE on 20 Aug 2013 14:16
To confirm. You can be matchmaking banned from using extra controllers and having them be idle. This achievement is normally best boosted with a group where you can fill the lobby.
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By Doddingtown on 20 Aug 2013 14:28
Or trick the banhammer by getting a kill or two on the idle controller.
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By Methew on 20 Aug 2013 23:00
Fiesta Classic, also in action sack, is good for it, too.
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By Polerand on 23 Aug 2013 13:41
Just as I finished reading the solution, looked up and I was loaded into a Rockets'n'Rails game. Got the achievement and had the most fun with Hslo I've had in a long time. +1
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By KJT CD ACD on 27 Aug 2013 07:07
It's a fun game type!
I think I prefer the Action sack playlist more than any other!
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By Doddingtown on 27 Aug 2013 09:39
Why is this achievement worth a gamer score of 27? Makes your total score an ugly number for eternity
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By ndavis028 on 26 Jan 2022 19:03
Took me a few attempts but rocknrails is probably your best bet , just remember to aim at the ground near the enemy. Also if they are jet packing wait til they stop rising, they then have to come straight down taking damage when they hit the ground. If you time your rocket right you don't even need to be that close to them because they already took damage from the drop.
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By MuddyAmoeba on 04 Sep 2013 06:08
can somebody boost this achievement with me?
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By solidmonster3 on 04 Nov 2013 00:45
Could someone please help me get this achievement? I suck with the rocket launcher :( .
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By FrequentFlyer52 on 30 Nov 2013 09:34
easiest map to do this on is complex as you can camp on top of the highest building and wait for the enemies to start falling as their jetpack runs out, then shoot where they land.
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By ScottLy95 on 21 Jan 2014 14:33
Does getting this without dlc glitch out the others like crimson?
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By NIXXION44 on 21 Jan 2014 22:35
late but good tip; use jetpack it helps a lot! wink death from above! laugh (i unlocked it by accident, just got a rocket launcher spawned somewhere and gone doublekill - doublekill - achievement clap)
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By herbal1st on 08 Dec 2014 09:41
How can I choose the game type? I can only select the action sack playlist but it never puts me in the game with rocket launchers.
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By Daky on 26 May 2015 19:20
I'm throwing several days hours and hours and I'm not getting to play these DLC maps, I'm playing the SWAT mode and FRANCO SHOOTERS TEAM, someone can tell me of any hint of which way I can play to get to play these maps Bullseye Pack and Champions title Update, I thank the attention.
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By Flavynho2 on 19 Sep 2015 11:15
Down to get all the dlc achievements before servers shut down. I have 2 other controllers to help fill the lobby and will help others with their achievements too. Message me on Xbox so we can coordinate a time. GT: Nahzario
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By Nahzario on 04 Dec 2021 14:21
View all 17 comments Show less comments
This achievement can be difficult if not approached properly.

***The action sack method for rock and rail can be hard if you play with skilled opponets as they will jetpack and railgun you the whole match. Classic Fiesta is also hard becuase when ever i play it i get the rockect maybe once and getting 4 kills is difficult while getting shot at by incernation cannons and fuel rods.

The simplest method would be to play an objective gametype that doesnt include vehicles. Use the ammo tactical package as this will give you an extra 2 rockects in case you miss. just wait near the objective such as your flag in ctf or wait for the ememy to cap the hill and fire away!
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02 Sep 2013 02:16

4 Comments
Ammo is a support upgrade, not tactical package.
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By Aldanga on 06 Sep 2013 20:00
Sorry. I don't play halo 4 enough to know
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By MCmichaelD on 07 Sep 2013 02:40
Only that it wont increase ammo for rocket attleast. Still got the usuall 4 rockets not 6.
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By SaberFusion1 on 21 Sep 2013 13:47
Only that it wont increase ammo for rocket attleast. Still got the usuall 4 rockets not 6.
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By SaberFusion1 on 21 Sep 2013 13:53
View all 4 comments Show less comments
I managed to get this on action snack but it was a fiesta flag game type. And as the map was a funnel both teams with a sightline to each flag and spawn point with only one route to and from; I just unloaded every time I got the rocket launcher.

I actually managed to get it hanging out near the middle point in a alcove of sorts as they rushed I fired eventually netting 3 kills (with a shotty kill somewhere in the mid) my 4th I just fired towards the flag/spawn point and got a little lucky.

The hard part is staying alive in this game type and getting into position. My initial thought to fire everything at the enemy flag for all 4 kills didn't work. I admit the power weapons were like rain drops but I was surprised when it unlocked as I didnt think it would unlock on something like this. Yay! :)

Just another idea piggybacking on the action sack solution above.
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15 Oct 2014 01:58

This can be done on any of the maps in matchmaking. You can also opt to equip the Ordinance Priority armor mod in order obtain your ordinance drops much quicker if you are unable to grab the pre-set Rocket Launcher on the map. Once you’ve obtained the weapon, proceed to get four kills in a row. Make sure to conserve your ammo and pick your shots wisely. Free-For-All and Big Team Infinity Slayer are the best playlists to get this, since you can earn easy double kills or triple kills on the enemies. It is recommended to use a loadout with both the Mobility and Ammo packages. These will assist in terms covering ground quickly and carrying more Rocket Launcher ammo.

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