I have seen some people suggest trainers that already exist, so here is a list of them all [so far] for you.
You can find them all here: https://community.wemod.com/c/infinity/tools-and-trainers
And here: https://www.wemod.com/infinity/games
(All Trainers [So Far] in alphabetical order:)
ARK: Survival Evolved Trainer
Act of Aggression Trainer
Alien Isolation Trainer
Anno 2205 Trainer
Assassin’s Creed IV: Black Flag Trainer
Assassin’s Creed Rogue Trainer
Batman: Arkham Knight Trainer
Battlezone 98 Redux Trainer
Battlefield 3 Trainer
Battlefield 4 Trainer
Battlefield Hardline Trainer
BioShock Infinite Trainer
Borderlands Trainer
Borderlands 2 Trainer
Borderlands: The Pre-Sequel Trainer
Call of Duty: Advanced Warfare Trainer
Call of Duty: Black Ops II Trainer
Call of Duty: Black Ops III Trainer
Call of Duty: Modern Warfare 3 Trainer
Castlevania: Lords of Shadow 2 Trainer
Civilization V Trainer
Crysis 3 Trainer
Dark Souls II Trainer
Dark Souls II: Scholar of the First Sin Trainer
Dark Souls 3 Trainer
Dead Island Trainer
Dead Island: Riptide Trainer
Dead Rising 3 Trainer
Dead Space 3 Trainer
Deadpool Trainer
Devil May Cry 4: Special Edition Trainer
Dishonored Trainer
Dying Light Trainer
Enter the Gungeon Trainer
Fallout 4 Trainer
Far Cry 3 Trainer
Far Cry Primal Trainer
Final Fantasy III Trainer
Final Fantasy IX Trainer
Final Fantasy XIII Trainer
Football Manager 2016 Trainer
Gears of War: Ultimate Edition Trainer
Grand Theft Auto V Trainer
Halo: Spartan Assault Trainer
Hatred Trainer
Hitman Absolution Trainer
Homefront Trainer
Just Cause 3 Trainer
LEGO Marvel’s Avengers Trainer
Mad Max Trainer
Mafia II Trainer
Mass Effect 3 Trainer
Max Payne 3 Trainer
Metal Gear Solid V: TPP Trainer
Metro 2033 Trainer
Metro: Last Light Redux Trainer
Metro: Last Light Trainer
Middle-earth: Shadow of Mordor Trainer
Naruto Shippuden: Ultimate Ninja Storm 4 Trainer
RAGE Trainer
Resident Evil 6 Trainer
Rise of the Tomb Raider Trainer
Ryse: Son of Rome Trainer
Serious Sam 2 Trainer
South Park: The Stick of Truth Trainer
State of Decay: Year-One Trainer
Tales of Zestiria Trainer
The Bureau: XCOM Declassified Trainer
The Witcher 2: Assassins of Kings Trainer
The Witcher 3 Trainer
Thief Trainer
Tom Clancy’s Splinter Cell: Blacklist Trainer
Tomb Raider Trainer
Watch Dogs Trainer
Wolfenstein: The New Order Trainer
Wolfenstein: The Old Blood Trainer
XCOM 2 Trainer
OOPS! Have I missed any trainers? Is a link wrong? Please PM me if so and then I will update this thread.