Way too repetitive, I'm sorry but for sampling there's so much more you could have done. Chop it up more, maybe give it some stutter at parts or drop it out completely. Throw in another sample similar to mix it up. Use that siren half as much. Define your segments more in your track, make sure you make clear spots for verse, chorus, breakdown, etc. I know they're in there just make them really work together not just flow into each other.
I really like it. However those sirens are anoying after short time, but I know this riddim and I know that it's impossible to lose it. Anyway maybe you can do something with it.