Activating this trainer:
Press F1 at main menu.
Listen for 'Trainer Activated'.
Press desired hotkey. All hotkeys can be changed on the trainer.
NumPad1: Infinite Health
NumPad2: Infinite Breath
NumPad3: Infinite Ally Health
NumPad4: Infinite Ship Health
NumPad5: One Hit Kills Enemy Ship
NumPad6: Stealth Mode
NumPad7: Freeze Countdown Timer
NumPad8: Freeze Stopwatch Timer
NumPad9: Toggle HUD (Credits to Sun Beam)
NumPad0: Change Time Of Day By 1
NumPad/: Increased FOV
NumPad*: Zoom Hack
NumPad-: Toggle Minimap Mask
NumPad+: Instant Cooldown
NumPad.: Save Position
Page UP: Teleport
Page Down: Undo Teleport
Insert: Teleport To Waypoint 10
Home: Change Money By 500
End: Change All Resources By 10
F2: Change Player Height Position By 10
F3: Unlimited Item Usage
F4: No Reload
Misc: Time Of Day
Resources: Smoke Bombs
Resources: Ship Crew
Resources: Sleeping Darts
Teleporter: Use the teleport only while the character is moving.
Teleport To Waypoint: Create a waypoint on your map first and close the map. Now while moving your character press hotkey.
WARNING: YOU MIGHT STUCK SOMEWHERE AS THE HEIGHT COORDINATE ISN'T STORED IN THE GAME.
You can set the height the trainer writes on the trainer GUI. If you stuck you may increase the height yourself.
Resources / Change Money: Press escape ingame first to enter the menu where the materials are shown. Now you can edit them.
Stealth Mode: While active you are completely stealth. Also if you are already seen by guards they will stop hunting you.
Toggle Minimap Mask: After activating this option you'll need to open and close the ingame menu. The range of the map being displayed on the minimap is greatly increased. Press hotkey again to disable (you may need to open and close the menu again).
Zoom Out: While active the camera is zoomed out a bit more than usual for a better overview. This does NOT work on the ship. You can set the distance on the trainer GUI which has to be done BEFORE activating the trainer.
Increased FOV: While active the FOV is increased. Improves the zoom out feature as well. This does NOT work on the ship. You can set the FOV on the trainer GUI which has to be done BEFORE activating the trainer.
Change Player Height Position: Pressing this hotkey will increase your player height position. Useful if you used teleport to waypoint cheat and got stuck in the ground.
Item Usage: While active you can use as many items (i.e. smoke bombs) as you want. Please deactivate it when not needed.
No Reload: While active you do not need to reload your pistols.
Unlock more trainer options including updates from here - Assassin´s Creed IV Trainer