Edit: Also I have some of the dlc so I don't know if this will work for you 100% so please let me know if this works for you.
Edit again: Died Trying, A Hero Spared!, and The Loyalists can be obtained.
Died Trying: Easier one to do, once you load the save choose to defend Leon. Then just die.
A Hero Spared!: Choose to defend Leon and kill your ex teammates.
The Loyalists: Choose to execute Leon. Then kill the ex teammates and Leon.
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This save is at the last checkpoint of the last chapter. I might need to look into this save a lil more. I know the save will work but I need to test it on my other account.
With this save you will be able to get the following
ability trophies:
One Trick Pony
Feeling Stronger Every Day
Look What I Can Do
So Many Choices
Choose Spectre go to his abilities under his name and purchase the sonar vision. This will unlock the One Trick Pony and Look What I Can Do trophies.
Then choose Beltway go to his abilities and purchase the Laser Trip Mine, this will unlock the So Many Choices trophy.
After that quit the game and re copy the save over. This time choose Vector and upgrade any one of the 3 abilities for the Feeling Stronger Every Day trophy.
Here is what combat trophies you can get from this save:
Like a Butterfly: Go up to any zombie and hit circle to use a melee attack, if the zombie looses balance then hit X to do a quick kill.
Only Hurts For A While: Let zombies hit you and eventually you will turn infected.
Green Thumb: Use any green herb to get this.
Clingy: You might need to go to a different chapter to get this since there won't be any parasites in this last part but all you need to kill is one.
Stop Squirming: Just like Clingy there won't be hunters around here but you only need to kill one.
Thats all I've got for now but I'm currently playing it so I will update when I can obtain some more trophies.