I'm more pissed that he was defeated by a tiny piece of silver in his heart. What a joke.
And I'm confused because in the Dawn, Alucard was like "lol Walter you kill him I can't do shit he's too strong!"
I figure Alucard was weak back then, and only got stronger during hibernation as a result of alchemy experiments. We'll find out when Hirano continues the Dawn when Hellsing is over.
But knowing him it'll probably turn into a pure comedy batshit insane crazyfest.