I need a few DLC achievements in halo reach

My plan was to get all the achievements but then I realised some of the achievments were dlc map packs so I downloaded the maps but I cant connect to any of the maps to get the acheivements on. Is it too late now to get the achievments because that would really suck. The following achievements are:

Noble 1: Blow up the reasearch facility in a matchmade Invasion game on Breakpoint. (How do you get this one)
Defiant: Prevent the attacking team from touching the flag in a matchmade 1-flag CTF game
Defiant: Assassinate a player that just exited Armor-Lock in a matchmade game.
Defiant: Be the last surviving uninfected player in a matchmade Infection game.
Anniversary: Get 3 headshot kills in a row in a matchmade game
Anniversary: Infect 3 players in a single round in a matchmade Infection game.
Anniversary: Stick and kill the flag carrier with a Plasma Grebade in a matchmade game.
Anniversary: Perform a Beat Down on an ememy player while using the Jetpack during a matchmade game.
Anniversary: Run over 5 people with a vehicle in a matchmade game.
Anniversary: Capture 10 skulls at once in a matchmade Headhunter game.
Anniversary: Kill an enemy with their own Plasma Grenade that is stuck to you in a matchmade game.

Join ‘Masters of the Halo Achievements’ It’s my group which is slowly growing which aims at helping people get achievements. I would also encourage you to get a true achievements account.

> 2533274877438512;1:
> My plan was to get all the achievements but then I realised some of the achievments were dlc map packs so I downloaded the maps but I cant connect to any of the maps to get the acheivements on. Is it too late now to get the achievments because that would really suck. The following achievements are:
>
> Noble 1: Blow up the reasearch facility in a matchmade Invasion game on Breakpoint. (How do you get this one)
> Defiant: Prevent the attacking team from touching the flag in a matchmade 1-flag CTF game
> Defiant: Assassinate a player that just exited Armor-Lock in a matchmade game.
> Defiant: Be the last surviving uninfected player in a matchmade Infection game.
> Anniversary: Get 3 headshot kills in a row in a matchmade game
> Anniversary: Infect 3 players in a single round in a matchmade Infection game.
> Anniversary: Stick and kill the flag carrier with a Plasma Grebade in a matchmade game.
> Anniversary: Perform a Beat Down on an ememy player while using the Jetpack during a matchmade game.
> Anniversary: Run over 5 people with a vehicle in a matchmade game.
> Anniversary: Capture 10 skulls at once in a matchmade Headhunter game.
> Anniversary: Kill an enemy with their own Plasma Grenade that is stuck to you in a matchmade game.

Fine with me.

I finished mine. I would suggest true achievements. To join boosting sessions. This has helped me get a 3k halo gamescore increase in 2 weeks.

> 2533274972430429;2:
> Join ‘Masters of the Halo Achievements’ It’s my group which is slowly growing which aims at helping people get achievements. I would also encourage you to get a true achievements account.

Okay I probably will but how do you get to it, is there a link to it.

> 2533274877438512;5:
> > 2533274972430429;2:
> > Join ‘Masters of the Halo Achievements’ It’s my group which is slowly growing which aims at helping people get achievements. I would also encourage you to get a true achievements account.
>
> Okay I probably will but how do you get to it, is there a link to it.

Search for it in the xbox clubs section.