After going through what I wanted to do I realized I was doing things for nothing out of the norm really...I mean...take complete advantage of high pounces, reset if going solo, use corners and frequent obstacles...go as fast as possible...cut through buildings as long as possible...so yeah...I fail...well I'll have something better next time so to make things up for my fail here is a few things that are highly advised or just kinda there to do for kicks:
Part 2: About half way through there is a alarmed car ramped up against a van. Start the Alarm and jump over fence so you don't have to go through an entire block (pros: you skip a pretty decently sized section...cons: you call a horde)
Finale: Probably the best place to go for the finale is to hide in the large storage room behind the escape vehicle. There are 2 entrances in which you can tunnel enemies into but make sure to spread out for tank and rush the generator when it fails.
Part 1 (For kicks when bored): When about to go down to go underneath the bridge try getting puked on in this area. Hide inside the building nearby while things back. If you hear wall scratches ignore it. If you are lucky you will get a pub dumb enough to actually break the wall. Kill them and head straight for the howitzer. You just skipped a pretty big section of the map. For the event though it is advised to fire the howitzer and go down the hill and into the room in the far corner. There are 2 small doors which makes it very easy to tunnel enemies and not get hurt much if at all.