Bartolomeo's fighting style and tactics?

[Warmmedown]

Have we ever seen him fight on the offensive? What does he actually do? Can he attack from behind his barrier? Is his barrier a one-way shield? Can he make a barrier room?

Could he do this:
-Create an above-ground barrier tunnel between Whitebeard and Sengoku. Then stand behind WB. Then WB spams earthquake attacks, killing Sengoku.

OR
-Make three adjacent barrier rooms. He goes in the end one (because the barrier has to be around him and also to protect him from potential meddlers like Scooby Doo, Shaggy, Velma, Fred and Daphney (PS did Velma ever do anything useful with her glasses on? Can't remember). The middle one contains Akainu (or Magellan). On the other side of Akainu is Ace, Marco, Roger, Luffy, Kaidou, Zoro, Sanji, Usopp, Nami. He makes a small hole 1cm*1cm in the room's wall. Akainu pours magma through the hole, slowly killing all your favourite heroes. Oh you think they'll use haki to withstand the magma? Yeh ok, but they have no food. Bartholemeo brought snacks and pepsi for Akainu, so he can go for weeks.

OR just make a simple barrier and have WB or Mihawk stand behind it and spam earthquake or long-distance sword attacks through the barrier.

 

[Warmmedown]

Can he make a barrier over your face until you starve?

Is his hair held up with barrier or with gel?

 

[SSJ2]

I think I remember him using the barrier to punch people. He could also send the barrier outwards like a shock wave to hit enemies. So I guess he can attack from behind the barrier, but if he sends it outwards he likely becomes vulnerable to attacks from other angles.

 

[Symbiote]

I think I remember him using the barrier to punch people. He could also send the barrier outwards like a shock wave to hit enemies. So I guess he can attack from behind the barrier, but if he sends it outwards he likely becomes vulnerable to attacks from other angles.

These were the only ways I remember him attacking.

 

[Warmmedown]

Does much will the barrier hurt when it hits me? Like what determines the speed he can send it at? And how heavy does it feel? Is it like being hit with a train moving at 90mph? Or 20kg slab of marble moving at 50mph?