Fusion Dots

This unlocked for me on stage 49 when the goal was to create a 10AM dot, I don't know if this was a glitch or whether it unlocks this way for everyone yet.

Everyone will have their own strategy for this game so this won't be much help as if you've reached stage 49, you already probably have it pretty figured out.

The strategy I used is fairly simple but may require some practice. Essentially you want to keep your most valuable dot in one of the corners (I use top left or top right for simplicity). If you are keeping that dot in the top row, try to fill the top row full of dots so that when you swipe left/right your valuable dot stays in its corner. The other rule to this strategy is NEVER SWIPE DOWN as you are likely to lose you dot in it's corner, or the top row structure.

Basically you keep your top row stacked with all of your most valuable dots, usually in a snake like pattern (i.e. 9am - 8am - 7am - 6am). Then you have to manipulate the rest of the board with up, right and left swipes in order to create dots to fuse with your valuable dots. When you fuse your top row dots, try to fill the top row again fairly quickly and work on upgrading whichever dot you put in so it catches up to the rest of the row.

Sometimes using this strategy you will get stuck and have to swipe down. This is very annoying and will usually lose me the game. You can get better at predicting when this might happen (usually your top two rows are full, 3 in your 3rd row and you slide left/right and a fourth spawns in that third row, leaving the bottom row empty and no other moves). Do your best to prevent this from happening but it is something that definitely comes with experience.

Sorry this isn't a super guide or anything. This is a tough game, power-ups will be your friend a lot of the time. Colour up is probably the most useful power-up, it essentially halves the amount of time/moves you be removing the lowest value dot and starting at 1am dots. This means going for 10am will be more like going for 9am. I got this achievement in particular without using I definitely found it useful on other levels.

Good luck, if you have any questions feel free to comment, I will try to incorporate more information into the solution based on questions.

EDIT: playerforty4 has confirmed that you can get the 11AM (and probably the 12AM) achievement on certain objective based levels. If you have an objective such as fuse four pairs of dots four times or have 4 7AM dots at once or something like that, and there is no timer/move limit (or if you're fast enough even with the time limit), you may be able to just play the game normally and try to earn these achievements without progressing fully through the stages.