This is my guide - informing you about the worst levels in the game

Chapter V

One of the worst levels to speedrun - mines itself are very dangerous and there are many enemies hidden behind many, many covers (barrels, boxes) and you can sometimes even barely spot them / miss them so they'll easy damage you. It has a hard possible shortcut but it requires luck and skill to perform it to be faster. Also some miners throwing dynamite are pain in the ass sometimes. Adding to that, if you want to be fast and progress further sometimes you can't - because if you'll left over some enemies there, your AI companion will slow you down and try to kill'em all and then go to you. Make sure you kill all enemies first in some parts.

Chapter X

This is a very open and big map about Indians attacking you. They can easily blend in with the forest-like nature of the map. They can mostly hide far in the trees and this chapter could be annoying for some

Chapter XIV

One of my most disliked chapters. I don't even know how people do this mission on Very Hard Difficulty: 1st reason - Night Time - You can't see jack sh*t. 2nd reason - stupid horse objective, that you need to deliver horses to the stables. They can get easily killed and you can easily fail this mission. 3rd reason - Thomas, because he can only carry 1 pistol while with two would be easier - therefore he's only good with rifles & knifes, which makes him pain in the ass in the mission, because if you didn't acquire a very good rifle or a bow before this mission - you guarenteed to fail. One of my most least favourite missions as a kid, and probably still now.