Man of 1,004 Holds - 100GS - Perform a total of 1,004 signature and finishing moves in any mode of play (Offline).
Unfortunately it isnt confirmed whether this has to be done in one match, or one session without turning the xbox off, or with one superstar.
This is the way I got the achievement, so I can confirm it works.
This method takes between 1 and a half to 2 and a half hours. I read the other guides for this but didnt feel they went into the details enough that can help you get this quicker.
First go to my WWE - > Options - > Gameplay options -> Match Options - > In game options and change the difficulty to Easy, and make sure the stamina system is turned off. Then Click A. Your settings will save.
Now choose Gameplay Balance Options - > AI Reversal Balancing and reduce all sliders to as low to the left as they go. This will prevent any reversals in the match
Next change Damage Balancing and turn Finisher Strength as high as it will go. This helps you get to a quicker
Click B till you get back to the main menu, and choose Play. - > One on One -> Ladder. The reason we do a ladder match is so it prevents any freak pins by your opponent ending the match.
Choose to play as Sheamus (due to his good signature and finishing moves),
As your opponent pick either the Druid (if youve unlocked him), or Santino Marella. These are the weakest characters in the game
A pop up may now come up asking if you want to schedule this as the first match on the card for WWE Universe - CLICK NO. If you click yes then you run the risk that there may be interference during the match.
Next click match creator and change the momentum bar charge speed to Fast. This will help us get finishers quicker.
Click play and the match will start....
But as soon as it does pause! Go to visual presentation in the pause menu, then camera cuts, and make sure these are off. These can really slow you down.
Now start the match
Quickly attack your opponent and as soon as you have a Special use it by clicking Y when your opponent is groggy in front of you to perform a side slam. Pick your opponent up straight away by clicking up on the right stick, then take a step back, hold LB and point towards your opponent and hit Y. Seamus will do a jumping Brogue kick.
Once you get to 3-4 minutes in your opponent will be so worn down that you can pick him up, tap x three times to perform a series of punched, then Y straight away to hit your signature move, pick him up clicking up on the right stick then step back hold LB and point towards your opponent and hit Y. Repeat for approximately 2 hours and the achievement is yours.
The achievement is unlocked as soon as you hit the count, you do not have to finish the match and as soon as the achievement pops you can quit.
Please note - other achievement guides suggest changing a superstars finishing moves - this could possibly make it quicker so may be worth doing, but I havent fully tested this myself.
EDIT - To make it even faster Benjy666 reccomends editing the finisher and signature moves of your wrestler to Boxing Ground Punches. After your opponent is worn down enough you can get into the following loop:
(Standing at your opponent's head with them lying down on their back)
Right stick left/right (Shamus lifts their head and punches it a few times, this is already his move) -> Y (Boxing Ground Punches signature move) -> Y (Boxing Ground Punches finisher) ...and repeat. This loop can be achieved every 10 seconds, making the achievement unlock within 2 hours.