9. Warhammer 40,000: Dawn Of War 2 - Pure Ending
The lore behind Warhammer 40,000 is absolutely staggering. There are so many factions, races, storylines and other goings on that it's hard to know where to start, let alone jump in to.
The Dawn of War games are but one branch of the 40K universe, a series of Real Time Strategy games for PC that sees Space Marine, Tyranids, Eldar and Ork forces fighting against each other.
Much like other campaign-based strategy games like Command & Conquer and Starcraft, Dawn of War 2 tells its story mostly through its mission structure.
In these massive missions, you can collect items and resources that can enhance and give you an edge against various enemy hordes.
However, some of these Corruption, a force that well, corrupts otherwise strong minded men into the forces of Chaos. So, the challenge to getting the purest ending is to not be tempted by these shiny things.
Essentially, this puts the game into a "harder mode", as you are willingly ignoring items that'll make your life easier.
I mean, respect though, for not giving into temptation.