Accomplish the indicated achievement to get the corresponding number of Gamerscore points:

That's gonna leave a mark (20 points): Powerbomb an opponent on top of a steel step in any match type.
Possession is 9/10 of the law (20 points): Steal your opponent's taunt 3 times in any One on One match.
Put'em in a body bag (20 points): Turn your opponent's entire limb damage meter red in any match type.
I'd like to thank the academy (20 points): Defeat a Powerhouse Superstar with the Possum Pin in any match type.
You've got a bit of red on you (20 points): Get busted open by your opponent on legend difficulty in any match type and win.
Who says originality is dead (20 points): Create an original CAS, ring entrance and created Championship.
King of the mountain (20 points): Place first in every type of tournament in Tournament mode.
If it bleeds.. (20 points): Bloody every ECW Superstar on the roster.
Submission-sensei (50 points): Win a Normal Submission match without having your Struggle Submission hold broken once.
Stop yapping and fight (20 points): Argue with the referee 4 times in a match and win.
That's one for the record books (20 points): Eliminate 20 opponents in a 30-Man Royal Rumble.
Now that's hardcore (20 points): Bloody and defeat a Hardcore Superstar on legend difficulty in an ECW Extreme Rules match and win.
The best there was... (20 points): Win a 20-minute Ironman match on legend difficulty without surrendering a point to your opponent.
A fighting champion (75 points): In ranked online matches, defend a CAC title 5 times against 5 different players within 24 hours.
Gold digger (70 points): Win a Created Championship 10 times in ranked online matches.
On fire (75 points): Win 30 consecutive ranked online matches.

Additionally, there are ten secret achievements, all of which are currently unknown.