ok, I'm gonna hit that Arcade mode hard and I need advice. What's the best way to get all three stars, etc.?
On what to pay attention? How to move? Etc. etc.
TACTICS PEOPLE!
i use the first wave to build up the multiplier a bit (say 4 or 5x) and to collect weapons - crossbow and revolver. the revolver packs a punch with a good amount of ammo and the cross bo can really kick ass when you have loads of taken as its both really powerful and you dont need to have removed the darkness from baddies before killing them.
tactics wise, make your way towards a light or ammo resuppy box so the are accessible when you need them. never et yourself be surrounded by taken, its not too difficult to sprint away so they are all coming, at least for a while, straight at you again - making it a perfect time to blast them all with a flare gun to the crowd. if notice a grenadier, pop him off first. the arent all that likely to kill you, but the radius of the nades will often just tag you enough to screw up your multiplier which is key to a big score.
big scores are a result of balancing a big multiplier with killing more taken. if you take it too slow building your multiplier up to 9 after each time you get hit, you wont have enough time to kill many taken. however, if you charge into battle constantly, killing taken left and right, you may find yourself on VERY difficult waves of enemies with lots of time left on the clock and ammo running low. its a balancing act depending on your skill with dodge and battle awareness. those that are great likely are killing a ton of taken as their multiplier doesnt drop often. however, if you are still struggling with being consistent with the dodge, you can still get a 3 star score by taking it a bit slower to keep the enemy waves easier and your multiplier higher.
last of all, make sure your multiplier is highest at the end of the round. when dawn hits, all taken that are after you you will be killed adding to your score. if you are on a higher wave of enemies, and with a high multiplier, this can be a drastic boost to your score