Win a fight by doctor stoppage due to cuts. This achievement also contributes to the 'Cessation Sensation' achievement. It sounds harder then it is once you get the hang of it.
Create a fighter and don't fill up his stats at all. Then go to Exhibition Mode, pick up any fighter you want to play with, though it's recommended to use a Muay Thai fighter, such as Jon Jones (LHW), Quintin Rampage Jackson (LHW) or Kenny Florian (LW) and put the difficulty on beginner. There is no need at all to set the fight for more then 3 rounds, cause using this method, the doctor stoppage comes in the first or second round.
The key here is to use weak strikes to the head, in English: Use and , but don't use in in combination with the or pressing the towards your opponent, or use headkicks, since that will KO your opponent at a certain point before the doctor stops the fight.
There are two positions you can work out those cuts nicely. The Muay Thai clinch, which can be accessed by pressing and the towards your opponent. From here you can work nicely with either the or , or you can throw him on the ground from the clinch position by pressing and doing a major transition from the clinch and work on the cut further on the ground. If you don't use strong attacks, the fight is stopped at some point, the doctor will look at it, but the fight continues. That's normal, but just keep following the description here and the doc will stop the fight for the second time, leaving you with the win and this achievement.