Almost anything, really. The tutorial on the game explains it in depth, but say, for example, that you have to get past a lion to get to the starite. You could write a weapon, like "sword," "gun," "grenade," and so on, and use the item that appears to kill it. You could also write "hole" or "pit" and trap the lion while you jumped over it. You could even do something like "black hole" and use it to suck the lion up, or "cupid bow" to tame it.

Basically, think outside the box. Some puzzles are harder than others, but since Maxwell can't really "die," you can reply levels over and over until you find a method that works. If you have enough money (or Ollars) you don't even have to finish all of a world's levels. You can just buy entrance to the next area on the world map.

 out of  found this valuable. Do you find this valuable?    

No, the level editor is in the main menu that you get after the title screen, saw it at Gamescom.

 out of  found this valuable. Do you find this valuable?