Echochrome II

There is a simple and fairly quick way to get the trophy.
On an alternative account, you create or copy from someone (you can copy from me, I found it online) a simple level that can be completed in a second.
After that, go to this level in the Create menu item, click Start and there Upload. The level is uploaded to the network. Click on 11 more times - thus filling all 12 available cells with this level.
From your main account, go to the game, Network, Search, Search ID and enter the id of your alternative account. Quickly go through all the levels, not forgetting to make a sticker at the end of the level.
You can apply a sticker to each level 1 TIME PER DAY! The game reports this if you try to attach a second sticker at once.
Then you can use several accounts (if you have them), you can republish the levels, or you can log in the next day and download the published levels again (tested by me, it works - I finished off a dozen and a half stickers by re-downloading the next day)

A very long trophy, since each level can only be given one sticker. But if you liked the game, then you will probably enjoy it, because in order to give a sticker you need to complete the level.