As stated previously, The Kid must go through the Tower twice, although on different, parallel paths; once after going through Tourian, and once after The Factory. After beating Tourian The Kid must go through the inside of The Tower. The inside has a fairly linear progression to the Gate of The Guy. After going through The Factory The Kid must go through the outside of The Tower, in which he must progress upwards, with a large spike puzzle. After passing through the large spike puzzle, The Kid will converge into the path he takes to The Gate of The Guy after beating Mecha Birdo.