Overview:
-Estimated achievement difficulty: 4/10
-Offline: 59 (1245) (1000 offline in the retail release)
-Online: 1 (5) (Uploading a score in the DLC "Riot Control Mode")
-Approximate amount of time to 1250: 8-15 hours to 1000/5+ hours for the DLC
-Minimum number of playthroughs needed: 1-2
-Number of missable achievements: 0 with mission select.
-Do cheat codes disable achievements?: No cheats known
-Does difficulty affect achievements?: Yes
-Glitchy achievements: None
-Unobtainable achievements: 0
-Extra equipment needed?: None

Introduction:
Welcome to the Dead to Rights: Retribution achievement guide. I found this game to be thoroughly enjoyable and extremely easy 1000. I have given this game a 4 out of 10 because some people may struggle with some of the aspects of the game. Someone who grasps the concept quickly will find this to be a 1 or 2 out of 10.

This game shouldn't take you longer than 10 hours but if you don't get many golds in your initial playthrough then it will take longer.

Playthrough 1:
You are going to want to start straight in on Detective difficulty to make this game quicker on yourself. Once you have selected that get going on the prologue and unlock:

"Scrotality"
"Once Bitten"

After you have completed this move onto Mission 1 where you will control Jack for the first time. Make sure you have a collectible guide handy from this mission onwards as well. There are 5 badges per level. This level is where you will unlock most of the oddball achievements such as “Get ready for a surprise!”. Also, on this level make sure you rescue ALL the hostages to get the “Protect the innocent” achievement. Also go for as many disarms in this level as possible too because the enemies become harder to disarm in the later levels and you will want to be using a weapon for most of the game after the first few missions. After that mission you should hopefully have unlocked the following:

"Crossing the line"
"Get ready for a surprise!"
"That's what you gets!"

If you have done a lot of disarms and takedowns you will also unlock:

"Bring a gun to a fist fight"
"Crime and punishment"

But if you haven't don't worry keep at them and you should unlock them within the next couple of missions.

Ok, Mission 2 is where you are going to want to farm all the combat related achievements you can. At the very beginning of the mission you will be in a boxing ring with Frank. After unlocking the “Shown the ropes” achievement DO NOT ring the bell. Keep fighting Frank and complete the following achievements:

"It’s all in the timing"
"Featherweight"
"Heavyweight"
"Shadowboxing"

Of course you don't have to do them right now but this is where you will need to come back to if you decide to do them later. I'd advise doing them now as hand-to-hand generally seemed like a bad idea on Detective.

Also in this mission is where you will want to get the “Headbanger” achievement.

Carry on with the mission, making sure to pick up all the collectibles. By the end you should have unlocked:

"Shad-owned"
"Headbanger"
"Shadow...keys"
"Man's best friend"

Depending on how well you have grasped the controls you will also unlock:

"Perfect balance"

But if you haven't, don't worry i'll be covering this in the Mop up section as well.

Mission 3 sees you finally being able to order Shadow around. So you can start working on Tag team kills now going for 20 in a level for the “Finish him Shadow!” achievement. You can do this in any level obviously so try and get it done early so you can concentrate on just getting through the harder levels without worrying about that. You can also go for headshots to get the “Boom” achievement but you will be pulling off incredible amounts of headshots in the later levels so be more concerned with the tag team kills.

By the end of this mission you should have:

"Dog tag"
"Commuter disruption"

and possibly:
"Boom!"
"Finish him Shadow!"

If you don't have these then make sure you concentrate on headshots and tag team kills in every level from now on. Past mission 4 though it starts to get a little bit tougher.

Mission 4 sees you take control of Shadow again. By the time you finish his section at the beginning you should have the “Dog's dinner” achievement but this will come before the game is over anyway without you even trying so don't panic if you haven't unlocked it just yet.

I feel I should warn you about 1 section in this Mission that can be a HUGE pain. Towards the end of mission you will have to defuse 3 bombs within a time limit. This can be very frustrating on Detective difficulty. My advice would be shoot for the head and send Shadow after everything. After defusing the bombs on the sides watch out for overhead snipers.

After this mission you should have
"Dog’s dinner"
"Guard dog"
"Apparently I CAN kill you"

Mission 5 is where it begins to get tough. This is due to the fact you will now meet the GAC for the first time and they are more armored than the standard triad forces you have fought. If you don't have the disarms by this point it might be a bit tricky trying to do them now as you need to pummel the GAC a bit before you can take their weapon away from them. At the beginning of this mission when you are controlling Shadow make sure you get 10 silent kills to unlock the “Shhhhh” achievement This mission should net you these achievements:

"Fetch!"
"Got your GAC"
"The battle, not the war"
"Shhhhh"

Assuming you have gathered all the badges up until now you will unlock

"The Price of Justice"

Mission 6! More than half way. However the hard stuff is still to come so don't get comfy just yet. Mission 6 sees your first encounter with the GAC tank. A fairly menacing a first glance but with his obvious weakness he isn't so bad. Shoot the canister on his back to unlock the “Smile, you son of a ...” achievement.

By now you should have unlocked most of the miscellaneous achievements. So after this mission just push for the end. This mission should get you:

"Smile, you son of a…"
"Canine fodder"
"Air traffic control"

Mission 7 has you carrying Faith to the medivac and taking out spotlights. Its a fairly straight forward and easy mission which will unlock:

"Just gimme the bottle"
"Keeping Faith"

Mission 8 only has a solitary story related achievement, but it is a very easy mission. So if you feel confident enough with the controls and have not yet unlocked it go for the “Got your back” achievement. Keep shadow close and abuse the infinite ammo inside Temple's body armour. Get hold of an LMG and spray everything that moves. Once you get down to the ground floor and take out the GAC tank down there its onto Mission 9 having unlocked:

"GAC hawk down"

and possibly

"Got your back"

Mission 9 is actually pretty tricky and I'd consider one of the hardest missions in the game. You start off outside the police station and must take Temple inside to get locked up. Mysteriously his body armor has disappeared so there is no more infinite ammo unfortunately. Push on through here and clear out the station. Once you have finished sniping the remaining forces from the rooftop its on to mission 10 (the final one).

You will have unlocked the following from Mission 9:

"Throw away the key"
"Run out of town"

Mission 10 is actually easier than mission 9. There is only 1 hard part and that is just after the sniping section in the command room. There is a box here with LMGs inside so I would grab one of those and try and stay near the box for ammo when you need it, this section is over when you get a cutscene with the police walking through the door and you get your companion back. Carry on through the mission to complete the game and unlock;

"Honor the dead"
"Dog of war"
"Doing it the ol' fashioned way"
"Just like Dad would have done"
"Best cop this city's ever had"
"Retribution"

Mop Up:
By now you should have most of the achievements. Just go back through the missions you didn't get gold and improve to such a standard. Doing this should get you “Perfect Balance” and “First at the scene” if you haven't already unlocked them. If you still haven't got them load up a level you know well on Cadet difficulty and do it there (NOT the prologue as this doesn't count).

Also if you haven't completed a level without dying load up a mission between 3 and 10 (id recommend 8 with the infinite ammo on offer) and take it slow and carefully.

This should have by now netted you your 1000 in the game. If not refer to the guide for more details on individual achievements you are missing.

DLC:
The GAC Pack adds 250 and ten achievements for 400 MSP. This brings the total possible score of 1250 and 60 total achievements. The guide for these achievements are detailed after the rest of the game's guide below. You will need to be connected to buy the DLC, so it should be no problem uploading a score to Xbox Live (happens automatically anyways when connected).

[x360a would like to thank Cla55y for this road map]