my mate bought The Division for his PC and it looks great, unfortunately i can’t cross plateform play with him from my ps4. are there any other good shooting games that i can cross plateform play with my friend?
Why would you want to cross plates?
Rocket League. In it, you shoot goals.
The only way to ensure you play with a PC player of your choosing is if you create a private game, though.
Another not-shooting game is DC Universe Online
Any good fighting games that are cross platform?
Depends on who you ask 
I have risk of rain on my laptop, ps4, and vita lol.