The Mountain Siege is the second scenario in the Le Loi Campaign in Age of Empires II HD: Rise of the Rajas. It is about how Le Loi and his forces defending the fortress from the Chinese invasion, while trying to escape at the same time.
- Le Lai (Vietnamese) are located in the center. Their forces consists of Rattan Archers, Battle Elephants, Onagers and Halberdiers.
- Vietnamese Army (Vietnamese) are located in the center. Their base is small, but quite well-fortified. Their forces consists of Rattan Archers and Halberdiers. After the first wave of attack by the enemy is repulsed, they will give all their units and buildings to the player.
- Ming Army (Chinese) are scattered around the player's base. They have a huge amount of forces, consisting of Chu Ko Nus, Arbalests, Halberdiers, Champions, Onagers, Scorpions and Trebuchets.
- Ming Army (Chinese) are located to the northwest, southwest, southeast, and northeast. They have a large amount of forces consisting of Chu Ko Nus, Arbalests, Halberdiers, Champions, Onagers and Scorpions.
- Le Loi must survive
- At least one Castle in the fortress must keep standing
- Destroy the two towers guarding the road east
- Twenty allied soldiers must escape east
- Le Loi must escape east
- Le Loi is restricted to 150 population because of the lack of supplies
- Make sure to defend the gates at all cost. Once they are breached it will be much harder to defend the fortress
- Most resources can be found out east so try to clear it for your villagers
- Due to a shortage in supplies, the construction of siege units is impossible
In the beginning, after receiving the fortress from the Vietnamese Army while the Ming start to attack, pool the scattered army together and then start clearing the path to the corner. Bring Le Loi along as he needs to be in the corner eventually (do not hide him in the castle). It is best to begin south so the player can get to the berries and gold pile. At the meantime, produce Villagers to gather resources as many resources as possible in the base, or send them to the east to gather more (don't forget to send some military units to protect them), and build some buildings such as Stable or some Towers to defend the base. New Town Centers in the east are a good idea, as there is no farm space in the base.
Train some soldiers (particularly Battle Elephants, if possible upgrade them to Elite Battle Elephants) and Monks and join with the army that was given in the beginning and divide them into two forces: one that will defend the fortress and the others that will go to the east. This way, the player may be attacked by the Ming but they will just have some small groups. Minimize casualties, and head to the east and destroy the two towers guarding the road to the east.
Once all the towers are destroyed, some Vietnamese soldiers (usually a group consisting of Halberdiers and Rattan Archers) will start leaving the fortress, and the player is told to cover the retreat (by sending some of the player's army to protect them until they reach the road east). Actually, instead of committing units, it's better to plug the passageways the Ming would use to intercept by building very large buildings to block the gaps. There are three such entrances from the northeast and two in the southeast, and all these routes can be blocked by constructing very large buildings, such as Stables and Siege Workshops (walls are disabled in this scenario). A tower can be constructed on the other side and manned with Villagers or archers to prevent Ming from breaching the barricade.
This will allow the player to focus on defending the base, which comes under very heavy attack in all directions, and where a single un-responded ram or Trbuchet can undo tons of hard work.
It is vital to clear all possible paths from the fortress the corner, as the allied troops choose one at random and the player does not want them to get into ambushes.
To protect the base, the player must snipe Ming siege which begins with solitary Capped Rams but soon becomes multiple Siege Rams and Trebuchets in several different directions. They will also bring giants armies of all types of units. Light cavalry is ideal as a cheap and fast response to siege. The player should make sure to have a strong food economy and plenty of Stables. Eventually, the player would need heavier units to hold the line as castles and gates go down. It is best to use Elite War Elephants and Onagers by this point; they can eliminate a lot of units very quickly.
After 20 soldiers reach the destination, Le Loi should already be in the corner or right next to it, so the player will win instantly.
- The scenario hints state that the player is unable to build siege units. Actually, only rams and Trebuchets are disabled; Scorpions and Mangonels can still be produced.
- This scenario is based on the story Le Lai rescued Lord, in which Le Lai disguised himself as Le Loi by wearing his cape and led 500 troops, with 2 elephants, to attack the Ming and give Le Loi and his army enough time to escape. Le Lai's plan was successful but he was captured and executed by the Ming while his troops were crushed in the battle.
- Le Lai appears in the Monastery in the fortress to attack the Ming after Le Loi reach the east.
- However, this is ahistorical, as Le Lai led his army to lure the Ming out of the mountain to give Le Loi and the others enough time to escaped at the meantime whereas in the game, Le Lai appeared solitary after Le Loi and the Vietnamese army escaped.