Best thing to do is drive on the left side of the road. You'll get an incoming traffic bonus, use that to nitro. As soon as a car is coming in your lane, get on top and jump, you'll probably get a takedown because your now-empty car was going so fast. Rinse and repeat.
It's great when you have infinite mana for some reason! I went to their site for 10% XP, and I can't tell if it made a difference for level growth, but I have as much mana as I want!
OMG!
seeing enemies in advance,
choosing only the towers you'll need,
attributes, plus moving them around when needed. In all the TD games I've come across, I absolutely believe this is one of the top 3.
Under 8 minutes: buy only sawblades, then ask yourself, what's cheaper? all three flow levels combined, or another sawblade? buy as you go, sawblades don't have to span the entire length of the level, but it will take you more time to accrue that 10,000 combo. Give yourself at least 90sec-2min to build up your combo.
Sorry to be a nitpick, but for some reason I cannot equip the sun axe to anyone, and assuming it's a double handed weapon I take off Mardek's sword AND shield, but to no avail.
So, I use escape wings and all equipment I bought and found are gone now? So I should focus on health potions instead and try to find stat upgrades, right?
 "The Perfect Tower"){kind=icon}
 "Freeway Fury"){kind=icon}
 "Wizard's Run"){kind=icon}
 "Survival Lab"){kind=icon}
 "Great Dungeon in the Sky"){kind=icon}
 "Gravitee Wars"){kind=icon}
 "Ghost Hacker"){kind=icon}
 "Epic Combo!"){kind=icon}
 "GunBot"){kind=icon}
 "Epic War 4"){kind=icon}
 "Ultimate Assassin 2"){kind=icon}
 "MARDEK RPG: Chapter 3"){kind=icon}
 "The Enchanted Cave"){kind=icon}
 "Prince of Persia: The Forgotten Sands Flash Game"){kind=icon}
 "mini Tower Defence (mTD)"){kind=icon}
 "Sonny 2"){kind=icon}
 "Elements"){kind=icon}