• Steam version of the game is 1.03, an official patch 1.05 is available online and can be applied.
  
• PCGamingWiki website[www.pcgamingwiki.com] has instructions how to play in higher resolution and how to skip the annoyingly loud intro videos.
  
• The game has some very loud and annoying bird sounds. The sound files are inside a file named sounds.pak in folder \Knights of Honor\packs and can be opened and edited using PakMan file extractor available at ModDB website. Alternatively, download[drive.google.com] the sound file I edited myself and replace the original one.

• At the start of the game, hire several merchants, utilize your king as a merchant too. Speed up the game because there's not much you can initially do without money.
  
• Attacking kingdoms with positive opinion or with any sort of agreements will result in kingdom power loss. Merchants can be used to lower opinion of kingdoms you want to attack by repeatedly sending them to trade with a specific kingdom and immediately recalling the merchant back. When the relations become hostile, AI eventually cancels all agreements itself or declare war straightaway without causing you kingdom power loss.
  
• Get your kingdom power to +5 as soon as possible. The more territories you have, the more expensive it becomes.
  
• AI is generally useless when it comes helping out as an ally in a war. Instead you will be called into their wars all the time and rejecting to uphold the alliance call will get you kingdom power hit. Do not go beyond the non-aggression pact.
  
• Enemy spies can wreak havoc in your kingdom. To avoid hiring spies save enough gold (at least 10k+), then pause the game and start hiring and immediately sacking knights. The queue list of spies assigned to your kingdom will get exhausted at some point. It is essential the game remains paused while doing this so no new spies can be assigned to your kingdom by the AI kingdoms. It is not possible to find out when the knights become safe to keep. This also depends on your relations with other kingdoms. If you're being disliked by many kingdoms, it is likely there will be more spies waiting to get hired.
  
• Build churches. Books are needed to level up knights and adopt the population of the conquered regions by the clerics. This removes the negative happiness Nostalgia modifier in a region and will prevent Loyalist rebels from spawning. If your region gets later conquered by AI kingdom, your own loyalists will be spawning in the region. You cannot attack rebel loyalists of your own country. Adopting a population of a region while a loyalist rebel is active will cause the rebel to disappear (I believe saving and loading game is neccessary to trigger this).
  
• Clerics can convert your regions with different religions. The success depends on their skill level. They can also get killed if they fail. Converting a region will remove negative happiness modifier for a different religion. The clerics ability to adopt a culture is not affected by his skill.
  
• There are two types of rebels. Normal and Loyalists. Both will pillage your city's surroundings and level up.
  Normal rebels are just nuisance and once they gain enough levels (stars), they become Famous rebels, giving your region a negative opinion modifier for their presence. They can also travel between the regions. When a spy hired as a marshall causes a rebellion, the other marshals in the kingdom will become famous rebels immediately, even if they were just level 1 marshals.
  Loyalists do not cross the borders of the region, but once they reach level 6, they will attack your city and try to take it over. This is easily avoided by having an average garrison stationed in the city but in case of an undefended city, the region will revert to the loyalist kingdom. If this kingdom no longer exists on the map, it will be revived and immediately at war with you.
  
• Tax collectors are useless. The tax bonus is negligible at the cost of negative region happiness modifier and using up precious building slot in the town. Some regions do not even have a village to profit from the building at all.
  
• Always keep at least one free space at your court. You can use it to capture prisoners for ransom or release for positive opinion boost with other kingdoms. You can also use it to 'teleport' your unassigned king or royal sons. If there's a distant rebellion or enemy army approaching your cities and your marhalls are nowhere near, you can spawn your king at any of your cities and quickly hire an army in addition to the city's garrison. Upon calling your king back to the throne room, his troops will be dropped on the world map as mercenaries for hire (for anyone), however you can hire them again for free. If not hired again, the units will eventually disappear. This method is useful for troop transportation as well.
  
• Best units for defending cities are ranged foot units. Make sure each of your cities has Town Watch House built, which gives you free and decent melee units during siege. They will provide meatshield for your garrisoned all-ranged units.
  
• Releasing prisoners captured after battle will increase opinion of the enemy country and their friends towards you, but will reduce opinion in other countries who happen to be also at war with the prisoner's kingdom (you're releasing an enemy marshal threat to them).
  
• Vassals give you a nice income boost. You can get a vassal in a peace deal. Either attack an enemy of your enemy whom you want as a vassal and take its town to significantly increase the opinion of the soon-vassal enemy. They will accept vassalage demand once they like you enough. Alternatively declare war on an enemy but do not attack his cities, plunder or attack his friends. That way their opinion of you will not deteriorate and just wait in your territories for the invading armies to capture and release their marshals for the opinion boosts. Once you get your own two marshals to make sure you're never outnumbered in a battle, you can vassalise using this technique even the strongest kingdoms as a one-region minor country, granting you massive income boost. It is essential however to keep relations with your vassals good by sending your vassals gold every now and then. If they declare independence, you will lose kingdom power. Also once you have your vassals in positive opinion, lock them in with non-aggression pact. It's going to hurt them more if they decide to attack and possibly makes this less likely.
  
• Heirs can be changed by clicking on their portrait. Be aware if you decide to make your heir a second or third son, the other two remaining sons may rebel and lead armies. Simply said, the first-born son expects to rule.
  
• If you happened to save just before a princess was born and you don't have any male heir, you can reload the game until a son is born. The gender is decided by the game during the event popup.
  
• Before assigning a knight to a region, click on the desired region first. It will be highligted in the subsequent regions list of your kingdom. Alternatively, you can press 'a' to sort the regions alphabetically or 't' to sort the regions list chronologically to the time when conquered.
  
• Members of royal family can be re-assigned to different roles, they always keep their levels in each profession and marshal abilities. Nothing is lost on re-assigning into a different role.

The most useful skills for marshals are:

Leadership - bonus army morale

Dread - decreased enemy army morale

Strategist - increased movement speed on the world map

Tactics - massive boost to attack/defense in a fortified camp, can also shoot arrows at enemy armies on the world map to soften them up before battle. Before engaging an enemy army, always turn your army into a fortified camp and wait for them to come to you. If they do not want to fight, place your army directly in the direction of the travel of the enemy army and place a fortified camp, the AI will just run into you and will not attempt to avoid your army. Maxing this skills will turn 1-on-1 battles which were previously 'balanced' or 'slightly winning' in autoresolve into 'winning decisively' with minimal losses.

Healer - reduced losses after battle

Conqueror - bonus army morale on enemy territory

Cavalry Mastery - for marshals entirely with cavalry units (rebel suppresion and quick response to emergencies), unit experience is displayed on unit portrait icons, between zero to 3 stars

Fanatic - significantly increased morale when fighting against different religion, this is situational - for example orthodox Byzantium will benefit more being surrounded by catholics, pagans and muslims, than England, which would not benefit until late game

Kingdom Advantages provide you with bonuses upon obtaining all necessary Trade Goods for each Kingdom Advantage. These can be obtained either by constructing specific production buildings dependent on Province features available in each region, or in the event of Exotic goods, can be only imported. To import exotic goods, Harbour needs to be upgraded to Admirality and then click on the anchor icon on province overview just below the icon for the number of books produced in the region.

Province features needed for each Kingdom Advantage for neccessary buildings construction:

Glorious conquest - Pasture, Mineral Deposits, Silver Ore

Secret order - Pasture, Silver Ore, Fertile Soil and Mineral Deposits (same region)

Grand Cathedral - Fertile Soil, Marble Deposits, Silver Ore, Pasture and Mineral Deposits (same region)

Silk Route - Pasture, Fertile Soil, Gameland

Age of Discoveries - Pasture, Fertile Soil, Brine

Age of Enlightenment - Pasture and Mineral Deposits (same region)

Grand Fortress - Mineral Deposits, Marble Deposits, Silver Ore

Crop rotation - Pasture, Fertile Soil, Brine

Urbanisation - Pasture, Brine, Fertile Soil and Mineral Deposits (same region)

Spring Festivals - Pasture, Fertile soil, Marble Deposits, Silver Ore

Note: 'Grand Cathedral' and 'Age of Enlightenment' require the trade goods 'Illustrated books', which is obtained by upgrading 'Library' into 'University'