Shop Dark tower Board game

Product Name: Shop Dark tower Board game
1981 Milton Bradley Dark Tower Board game. Very close to a complete set, but some pieces have slight damage, a couple red pegs are missing, two of the keys are missing, and a peg board is missing (these are the parts I noticed - please view pictures closely to identify if any other pieces are missing). The box and a couple of pieces show wear. The box has damaged corners and one corner is split. Also has tape on both ends that was used to keep box closed. The tower does turn on but is not completely functional. I am not sure what it would need to work again. This set is being shop sold as is and is priced accordingly. I.