MAP15: Dark Entries is the fifteenth level of Doom 64. It is one of the smallest levels in Doom 64, but it contains some seriously brutal, and very dangerous battles, especially on higher difficulty settings. The background music is a weird warping music with very scary sound effects. After going back to the main chamber, the player is attacked by not just lost souls and fireballs, but arachnotrons, too. Using the red key opens up the exit, guarded by a number of barons.