I was playing through the game and did it in many ways to get this achievement. Actually, spend more than 10 hours just to get this trophy. Any method comes to my mind, i try and failed. In the end, i find how to get this trophy. It's quite simple but you need more time to get it. Because the hint say 'When you clear the level, Cancel accomplish 20 times or up' it was confused me. I don't know what is the meaning (my broken english rip). Then i did translate it on google and seems no idea to find out. The last idea was to play through the game and count on it. Taadaa~ I got it.

All you do is simple, play it from the start. Choose the difficulty you want (I choose Normal to finish it quickly). You play around, beat the enemies and boss and finish the game. Repeat 20 times. In my case, i get it on 23 times attempt and it's pop up on the top right corner.

That's how to get the trophy. Hope you get it my friends. I was spending a lot of times just to get one trophy and finally got it. I don't want my mistake happen again so i decide to share this guide. But it was not approved to Steam achievement. My first attempt is randomly unlocked while I'm not focus into it. I think because of my slow connection. Then i try the second time and it is the same. I get it in-game but not in Steam global achievement. I assume this, the one and only broken achievement. Hopefully, you guys unlocked it not just in-game but also on Steam. Don't forget to connect it to internet. Have a great day, cheers~