Soulcalibur IV

Create a characteer with high HP and defense. Then go to the tower of lost souls on floor 11. The first character you fight will be relatively weak, so just let her hit you until you have no equipment. Then go in for the kill and the achievement should pop up there and then.

The best method for this achievement is to create a character and make them so that they have high defense/health, from there enter The Tower Of Lost Souls and go to Floor 11, this character is relatively weak which works out well because your attack will be lower then what you're probably used to.

Let the AI keep beating on you until she destroys all of your equipment, because your defense/health is so high you don't need to worry about getting KO'd, once she's destroyed all of your equipment just unleash on the AI and once you KO them, the achievement is yours!

I've linked in a video so that you can see this method in action!

* ^{Credit to RoosterTeeth for the video}

Create a character with the kittymeow suit and head and have a private match with a friend 3 or 5 rounds depending on how long it takes to break the head. So to break the suit just have the opponent(friend) do a thing where you are able to critical finish but dont do it(I think it's called a gueard break maybe...i dont know) so the suit falls off. For the head just press X once each time so it hits horizontally until the head breaks off. Vice versa for the Smasher acheivement.

credit for this goes to Xbox 360 achievements for this solution

Make a character with low attack, high defense, high hp
For skills, have Hp Drain A and/or Hp burst
Play TOS ascension Floor 24 and just let them attack you
When you are low on health, finish them off 1 by 1 to regain health, or use Hp burst
Keep the last guy at low Hp so that you can win quickly because I got this achievement with 4 seconds left

Alternatively, go online and do this in a player match with a friend.

extra: This method worked out for me better than JAGMAs method since the CPUs on floor 24 seem to attack you alot more

It personally took me 3 tries to get this achievement