Head to Delkfutt's Tower in Qufim and use the Delkfutt Key (obtained from Mission 3-3) to open the door to the basement inside level 1 at (E-8).
Proceed downstairs to basement and head to (I-6), where the passage dead-ends into a cermet door.
Upon attempting to open the door, a message will be displayed, "A bloodthirsty monster has appeared!". The monster Orna, and two Fomorian Spear will spawn.
Attempt to open the door again and watch a cutscene with the adventurer that was sent to kill Orna. He tells you that he hid the Hyper Altimeter in one of the streetlamps in Lower Jeuno.
The adventurer hired to bring Cid a hyper altimeter has been arrested and ordered to kill a monster named Orna in Delkfutt's Tower. Find the man and obtain the equipment.
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