[Quest] Snakes on a Train(line) extra spawns

Quest will spawn more than one quest specific monster if player kills more than 2 of the initial target monster.

Quest Name:Snakes on a Train(line)
Quest start NPC: Railroad Inspector Shalloani (20,16)
Date & Time: 9/1 0100
Frequency: Always (2/2 tests)
World name: Cactuar
Character name: Reisen Inaba
Retainer name: None
NPC name: None
Monster name: Aspis and Elder Aspis
Class/Level: DGN 100
Party or solo: Solo
In-game time: 1000-1500
Area and coordinates: Shalloani (26,10)
Housing: None
Steps:
1. Proceed to the quest area indicated in the map after accepting it from the initial NPC
2. Kill 2 Aspis, an Elder Aspis will spawn
3. Kill an additional Aspis before killing the Elder Aspis and another Elder Aspis will spawn.