It's a chinese movie, but I now its dubbed in english
The cast has powers. One cast, he's power is using a chain and in the end of this chain it has blade.
One cast he's hand is getting longer like tentacles (if I'm not mistaken)
The other cast, he can change his face from the face of his victim (one time there fought in a forest where his
Oppenent lost to him and he change his face from it)

I can't really remember the title... any one can help me? Pleasessssssssseeeeeee

You MIGHT be thinking of the 2005 Japanese movie Shinobi: Heart Under Blade, which definitely features a character who can assume the faces of others and who has a battle in the forest. Another character has tentacle-things that emerge from his sleeves. I believe there was also a chain-blade.