Full House Poker

The odds of hitting a straight flush by the river are 1 in 3590, which is pretty much the odds of successfully navigating an asteroid field (1 in 3720). The other hands are trivial to get compared to this one: the next lowest-odds hand to get is a four-of-a-kind at 1 in 595. If you haven't been lucky enough to hit a straight flush yet, the best way to grind it out is the same way you want to grind out the 10 four-of-a-kind achievement.

Use a turbo controller and play against a single opponent in a free tournament. If you don't have a turbo controller, you can still do this mindlessly while watching TV or something by just hitting A at regular intervals.

Set your game up like this:

Mode: Tournament
Game Format: High
Betting Limit: Pot Limit
Buy-In: $0
Turn Timers: Off
Tables: 1
Players per Table: 2

Now just set your turbo controller to constantly hit A. You'll always call down to the river, and if you bust out you'll automatically start a new game under the same conditions. If you don't have a turbo controller, just hit A regularly while doing something else so you don't lose your mind.

With average luck, you'll have this achievement after showing down around 3,500 hands. Just like the 10 full houses and 10 four-of-a-kind achievements, you have to actually show down the hand for it to count. I found that if I left my game running overnight I had played about 1,000 hands if that's any indication of how long this will take. Leaving it on a full day will probably play 2,500-3,000 hands.