Here is the full list of all 49 THE WORST GAME achievements.
Click BUTTON once
Click BUTTON 10 times
Click BUTTON 69 times
Click BUTTON 100 times
Click BUTTON 101 times
Click BUTTON 300 times
Click BUTTON 404 times
Click BUTTON 420 times
Click BUTTON 1000 times
Click BUTTON 2500 times
Click BUTTON 5000 times
Click BUTTON 10000 times
Click BUTTON 20000 times
Click BUTTON 30000 times
Click BUTTON 40000 times
Click BUTTON 50000 times
Click BUTTON 60000 times
Click BUTTON 70000 times
Click BUTTON 500 times
Click BUTTON 80000 times
Click BUTTON 90000 times
Click BUTTON 100000 times
Click BUTTON 150000 times
Click BUTTON 200000 times
Click BUTTON 300000 times
Click BUTTON 400000 times
Click BUTTON 500000 times
Click BUTTON 600000 times
Click BUTTON 700000 times
Click BUTTON 800000 times
Click BUTTON 900000 times
Click BUTTON 1000000 times
Click BUTTON 10000000 times
Click the SECRET button
Start up the game for the FIRST time
Press something in the STARTING menu
shhhh...
Quit the game
Click BUTTON 69420 times
Click BUTTON 2000000 times
Click BUTTON 3000000 times
Click BUTTON 4000000 times
Click BUTTON 5000000 times
Click BUTTON 6000000 times
Click BUTTON 7000000 times
Click BUTTON 8000000 times
Click BUTTON 9000000 times
Click BUTTON 9999999 times
Click BUTTON 21 times