Starcraft – the best way to get the x Blitz achievements

The ones I got are:

• Got a score of 50 in Classic Mode
• Got a score of 100 in Classic Mode
• Got a Score of 200 in Classic Mode
• Killed 150 Fruit Total
• Killed 500 Fruit Total
• Killed 1000 Fruit Total
• Killed 5000 Fruit Total
• Killed 10000 Fruit Total
• Killed 10 Bananas in one round of Classic Mode
• Killed 15 Apples in one round of Classic Mode
• Killed 20 Plums in one round in Classic Mode
• Got 6 criticals in one round in Classic Mode
• Killed 3 Pears in a row in Classic Mode
• Got a critical hit with a Mango
• Killed 4 of the same type of fruit in a row in Classic Mode
• Secret (placeholder)
• Failed with a score of 0
• Failed with a score of 69
• Failed with a score of 99
• Sliced 6 fruit in one combo
• Archived a score of 200 in Zen Mode
• Sliced 10 Coming Soon fruit
• Slice the secret fruit!
• Get the Lovely Bunch star in Zen Mode
• Got a score over 400 after all bonuses in Arcade Mode
• Got a score less than 20 after all bonuses in Arcade Mode
• Hit three bombs ans scored over 250 after all bonuses in Arcade Mode.
• You are relentless in your pursuit of perfection! (restarted a game 3 times)
• Complete 3 games between the hours of 2am and 5am
• Post a score to Facebook or Twitter

The quickest way to complete all the achievements (assuming you have sufficient skill level) would be to do it like this:

• Complete the campaign on Brutal, this will give you all the mission achievements below that require you to do it on hard difficulty as well (though in all honesty I had to do it twice, once on hard (also my first play through) to get through everything and then again on Brutal just to get it done). Also I did one on normal and only did the required missions to get through the game for the "Hurry up it's Raid Night" Achievement.
• To get all the Armory related achievements, on your normal/rush play through, save up all your money, buy all of one tier up upgrades (which will then give you the achievement) then reload your game and buy another tier. Make sure you don't save as it will give you all your money back at the reload point.
• With the ladder achievements, play random. When you get a win with random, it will also count as the race you randomed as. So random race as Protoss when you start the game you will get credit for one win as random and one win as Protoss. This goes the same with the Co-op games vs. AI.
• All the other random ones like, "Kill a full medivac", "Regen 500 HP on a roach", get "50 kills with one unit" (I BC rushed for this one and sent SCVs to repair), will all come in time as you get each race.
• Same rules apply with the co-op ones because most of them are race related (beat it on Random, gives you credit for random and the race you played as). Also for the difficulty related ones, do them on insane and they will give you credit for all the lower difficulties. Beat it on Insane and get credit for Very Hard, Hard, and Medium.