Slow as the turtles it was based on.
I really enjoyed the voice acting, went a long way towards the quality. The animation looked nice and sharp, but it was just so slow in everthing that happened. I personally didn't feel the turtles personality as to why this went down was set up very well. We all know and love banana phone, but huh?
Apart from this though, couple of tips that might make it nicer detail wise. Fuel ignites from vapours, so boom should have happened within the air above the spilt fuel. When the bullet casings hit the puddle of water, a simple amount of steam would have been a nice touch.
I want to rate it higher, but the pace needs to be picked up. I hope this aids you in that quest.