Purity Achievement (For those who do not understand what the achievement is saying)

[ADocileHamburger]

You must have EQUAL cards in EACH pile. I was under the understanding that "3 or fewer cards" ment for JUST your hand till I got it by having 1 DRAW 1 HAND 1 DISCARD. I will make examples what you need to get this achievement just in case anyone still might be confused.

EX1: 3 DRAW 3 HAND 3 DISCARD

EX2: 2 DRAW 2 HAND 2 DISCARD

EX3: 1 DRAW 1 HAND 1 DISCARD

Hope this helps because it wasn't obvious to me till I accidentally popped it by having exhausted my hand.

[LHGreen]

Uh, I don't think examples one or two would work. I'm pretty sure it's the combined total.

[1.2M | Missingno.]

You just need to exhaust all but three cards. Doesn't matter which pile they are in, just that you have a total of only three cards left.

The first two examples you gave have nine and six cards respectively, so those will not work.