I have been starting practising this game a few days and the triggers mechanics are a bit weird. I'm trying to track some behaviors so maybe we can optimize the run

Mission 1 - A new village is born:

There are 3 triggers in this scenario

• The first structure is on fire.
• 130 or 135 population (not sure).
• The first structure collapse.

Looks like the fire most be the first trigger by default and you can get the population trigger only after the fire one even when you can get the 130-135 population at any time. Also you can only finish the game after the 3rd trigger which can happen at any time (I guess only after the 1st trigger) because on this way more villagers will appear.

Mission 2 - Brundisium:

• Reservoir at 200 population.
• gardens/fountain at 250 population.
• 500 population announcement.
• Taxes and industry (not sure what trigger it)

1. You can finish the game before any triggers, just get 150 population. It can be done by building houses on the north-eastern side of the map, this way it will take longer for citizens to move there so you can fit 150 souls in the first immigration wave. Current WR (14s):
2. Same goes here. But it's faster to do it the intended way. Your trigger points seem right. Current WR (56s):