So you played the game and realized you can't earn coins by replaying levels, but you want the achievement? Maybe you even played the entire game without ever using hints, like I did, only to realize the game is rigged to give you about 70000 naturally.... I ended the file with 73117... No hints and no guesses, no line checker use either...

Feel free to laugh but while you're here, cheesing the daily chest is easy. You'll kick yourself for not doing it sooner.

Already opened the chest? Just change the date on your PC to 24 hrs from now. I recommend doing it while on the map screen to save time to the next part.

When you see the window to click on to open the chest, click it once.The chest will change visually and the lid will be open. Spam click it as fast you can, as if you're on a quick time event in a better game. You'll net multiple days of coins although the alert will say you got only 2000.

Change the date again. Repeat. I was clicking so fast I got around 130000, nearly double what I started with from the entire game gained 250-500 per level.

You can't go back in time... That is, once you sync your PC clock, it will say you have however many days until it can be opened.

If you alt-click your time and don't see a change date/time option, try choosing the "format date/time" option to get a separate pop-up to show.

If yo're not too sure how to get there, try pressing both the Windows key and the i key at the same time to open Settings. (or just go to settings however you usually do). search "time" if you don't see it as an option. Then, if you don't see the change time option, choose something to make the advanced options show. Such as date formatting, adding a second clock, etc. and in that window, there will be a few tabs to choose from and the one you need is the first one.

If you're a kid and don't have admin access to your PC, your only option is to spam click the chest when it becomes naturally available. Again, do it from the map, not the main screen.

Not a single picross needs a hint; all are solvable. However, most of them are quite brutal with only 1 or 2 areas to break in to the puzzle, so it's rather advanced. So after you've solved the first world without hints, and you are now swimming in coins, so ahead and go wild spending them on hints. Don't play the whole thing without hints like I did... I recommend the most cost effective purchase which appears to be 50 hints for 35,000 coins.

You can buy the 50 hints and use them all on a single level if you just want the achievements. You must complete the level naturally; do not use the "eyeball" (line checker) or a hint for your last couple of moves.

You can't complete the entire game in three minutes, but you can follow visual guides or use the hints. But you can get the achievements for the minigames and keys early. At the ending of a puzzle that gives a key and minigame, replay it several times until the achievement pops.

You should be able to complete a world on your own without hints, and complete a picross within a minute. Replay a small puzzle after memorizing it if need be.