Yes, you can store an excess of the paste in the refrigerator. Unless you freeze it, I would use the refrigerated left-over paste within three to four days.
No; the point of the tempura is to fry it before the glutens are bonded, which makes it nice and crispy. Saving it would allow the glutens in the flour...
The short answer is "No." You really need to use the general process outlined above. First, get the old wallpaper off. Then, wash the walls with one of the mixtures...
Well, you can cheat and enter in codes to play all characters. Go to YouTube and find the video called "Don't Starve Cheats/Console Commands - Unlock ALL Characters!"