Does anyone know a better way how to get this achievement? The only way I found is that you can rack up a series of numerous points in the very first level up until you can decide to move forward.

It's all about camping level 3.  Each of the green things that Sark shoots are worth 600 points.  If you can get both of them when they split, obviously you'll be racking up 1,200 points each time.

Just keep bouncing from platform to platform, shooting discs and waiting to kill spinners and those green blobs.  Just don't kill Sark!

I practiced about an hour a day for 4-5 days until I finally got the hang of it and now I could probably play forever without losing a life.

After 5 months of trying I finally got this achievement. All I had to do try to avoid the discs' fire by destroying one and stepping out of the path of the others. Now all I need is to try and win some games in the versus mode and I'll be complete.