The wooden plank doorways are something that will likely interest you from the start. They are blocked off and seemingly inaccessible, yet you can clearly see a portal inside. Getting through them is fairly simple once you have discovered how. It is simple to discover, but you won’t find out how to break the wooden planks until you gain access to world C, so there is no need to rush into this one just yet.
Once you have gained access to one of the worlds, you will quickly gain a huge hatred for those jigsaw puzzle things. You will need to solve 5, incredibly difficult puzzles in order to get to the end of the world. Thankfully, i have gone through all the pain of solving them and I have all of the solutions below.
For completing each of the 3 puzzles that are blocked behind the doorways with wooden planks, you will unlock a robot that will show you how to complete a puzzle. Fairly useless if you ask me, but hey, it might be useful to some. Worth doing if you intend on using this guide.