How was zoom killed by batman... I feel like he was too fast/his reaction time was too quick to be killed by a sword or a bullet. am I wrong in feeling this way, didn't anyone else feel that way?

Doesn't really matter how fast you are if you are distracted (by Barry) and the attack comes from behind.

I felt that I was an OK way to do him in, but I know I am not going to like it the day he returns. I mean, in a timetravel/mess with history story, if one thing should set in concrete; it should be that Thawne stays dead or never came to exist. (Otherwise we are likely to see him repeat the whole trick).