Days Gone because I just discovered this game and honestly I only played it because of the story. It is one of the best story based games I've ever played and the trainer helped to get rid of looking for gasoline or repairing the Bike so I could fully focus on the story.
C&C Ultimate: Having only one trainer for more than 20 games is a really cool thing. I believe CH is (or at least was) the only trainer site which has single standalone trainers that covers multiple games / games distributions. Before that trainer makers have released one trainer for each. Now with an all in one app its not such a big problem anymore but it still was a (small) milestone in history.
And many more
Days Gone such a trophy.
Never understood the bad critics on it on release, from what i understand most players liked it. Rated very good on steam and other stores.
That moment you drive into or by ur first horde what a rush haha, full disclosure it ended BAD!