Easier way to do level 18(balloonless): Push the "remove me" slowly with 7~8 letters and delete the letters. Then delete the words under the bomb to drop it.
Here's a headstart for those who are impatient. At the first battle: 1. Pause, hover over one of your gems on the field and right click once. Then click "X." 2. Click "G", drag a gem on the field to another one of a different color. 3. Make sure you have a level 1 gem in your inventory. Start, click on an enemy, pause. 4. Click "B" then hold shift. (The order is important.) Click on your orb, one of the towers, any of the wave stones. Release shift. 5. (This step is optional.) Start the wave at 1x speed. Call wave 2 early. Click "B" then hold shift. Bomb all of the enemies. If you manage to clear all enemies with only bombs then you'll get an extra achievement. This puts you to over halfway through the easy badge requirement. And it’ll probably take longer to read this than actually executing it. But hey, it works.
It's likely faster to get the easy badge by replaying Guardian (3) than the first level. Since you don't have to move like a tractor in that level. Icy Hot Balls (11) also works well but it's way more intense.
It's simple to make this work if you have actually read the message it gives you. Just satisfy BOTH of the following condition. 1. Use Safari or IE 11. (There are subsitutions but this two are the most simple.) 2. Have the Unity Web Player correctly installed. (https://unity3d.com/webplayer Here's the link if you're above googling yourself.) As long as the leaderboard is not empty it's a working game. Likely it will end up being dropped from the Best of 2014 Quest. But that won't stop this from being one of the best games in 2014.
The medium badge actually reports "bloons popped" instead of "blops collected." Although they probably will happen at about the same time so it's not a big deal.