[Ziggurats]

Instructions

Build the ziggurats by starting with the four-letter word at the top, adding the given letters and jumbling to get new words as you step down to the bottom.
Example:

Norse code? [ ] [ ] [ ] [ ]
Unconscious (+[D]) [ ] [ ] [ ] [ ] [ ]
Cash back (+[F]) [ ] [ ] [ ] [ ] [ ] [ ]
Company starter (+[O]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Answer: RUNE, UNDER, REFUND, FOUNDER

Creep along [ ] [ ] [ ] [ ]
Fine dishes (+[A]) [ ] [ ] [ ] [ ] [ ]
Snow tire alternative (+[S]) [ ] [ ] [ ] [ ] [ ] [ ]
Dreaded vegetable, often (+[P]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Launch [ ] [ ] [ ] [ ]
Good _____! (+[G]) [ ] [ ] [ ] [ ] [ ]
Pick out of a line-up (+[N]) [ ] [ ] [ ] [ ] [ ] [ ]
From abroad (+[O]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Thoroughfare [ ] [ ] [ ] [ ]
Decorate (+[N]) [ ] [ ] [ ] [ ] [ ]
Approximately (+[U]) [ ] [ ] [ ] [ ] [ ] [ ]
Call it a day, legally (+[J]) [ ] [ ] [ ] [ ] [ ] [ ] [ ]

Solution here