This is a tool-assisted speedrun. For more information, see http://tasvideos.org/2131M.html
Castle Adventure is a game made in 1984 about a cloverleaf person trapped in a deserted castle with monsters roaming around. You have to find a way to escape the castle by searching for clues.
You move around with the arrow keys. If you manage to find a weapon, you can attack enemies by simply moving into them. Similarily, you can pick up objects on the ground by moving into them. You can also type in