Legendary

Use the Assault Rifle, molotoves, and Animus pulses. Thats how i did it.

Shot gun did it for me. Just lace into him with it. Molotov's are good for doing DoT, and if you can hit with them, grenades do some decent damage too. Later on, the griffons become less of a chore to deal with once you have access to a flamethrower or the end-all weapon against them, the rocket launcher. =D So much fun with the launcher!

did you say kiss? i doubt its a typo L and s are far apart...you have to kiss a gryphon?

Just keep enough distance( not to far not to close) to his head, use molotovs and any quick firing weapon, and when he gets close sprint out of the way.

There is a magnum against the left wall once you run out of that area it bursts into. Its really hard but use the ammo in that then shoty or SMG. Also there's two guys on the other end of the square that can be used to distract the griffin for a few seconds.

Pretty much, keep a lot of distance and when it charges press the sprint button and jump to the side. Keep this up and you should kill it...eventually.

Tactic: Use the animus pulse to stun it then throw a cocktail and unload all you've got. Save your sprint, when it charges at you sprint away. Then slowly try and regin your animus pulse to stun it again. cleanse, and repeat.

The rocket launcher works best but you can use a flamethrower too but when you have neither use the saw or big machine gun same thing or the shotgun but the machine gun works best if you dont have the two big ones oh and grenades work ok their decent