Very easy but very fun too. The only level it took me more than 5 tries to get it 3-starred was the level with 50 ice cubes and nothing else. Too luck based. I kept getting 48, 46, 49...
Extremely luck based game but that's pretty common for launch games. I got 1,011,000 ft distance and 73,000 ft height using just $2500 weapon and level 12 chick character. I got all power hits landed and got a cannon 3 times in a row (ie right upon landing!). My diamonds went up from 225 to 370 from that single jump.
Finally completed main quest. Last stage wasn't hard at all, just hit the pedal to the metal and occasionally dodge/shoot mutant zombies. The hardest were choppers + explosive checkpoints.
Another tip: sentinels cause extreme lag, don't use them or if you do - keep the game off-screen. Browse another site or do something in background, either it will stop your PC for long whiles if they fire.
Kongregate users don't like turtles apparently. Toss the Turtle - they are thrown at 25,000 km/h and travel 500 miles while being struck with a hundred nukes mid-air. Epic Combo - a bored businessman creates a contraption which bombard poor turtles with 100000's of projectiles per second. And now this - you send on those creatues an army of zombie and cyborg penguins!
Battling arkon for 45 minutes, got him to 20% hp, he uses his charged-up black hole attack which kills 2 of my guys and stuns the last one for 2 rounds. Rest of his zoo kills my 3rd guy (which i can't control due to stun) and game over. Fck this game. I'm not fighting this dipshit for another hour.
Now that's a good flash game. 5 hours into, level 26 (or is it 27), I fight everything and almost all my skills are maxed but I still have some trouble in lava area. Kinda sucks that eq can have only 5 levels. I expected more like 10, that use a lot of those expensive materials.
Got the hard badge on 4th try. Options: Wave / Straight, you have to get yellow madness early on. I finished with 6.2 mio points, could've been 8-9 easily as I collected only 75% shapes and ran into red note several times at the end (score was >5M though so I didn't cared :P)
 "Icy Gifts"){kind=icon}
 "Homerun In Berzerk Land: Berzerk Ball"){kind=icon}
 "Road of the Dead"){kind=icon}
 "Epic Combo!"){kind=icon}
 "Penguin Overlords"){kind=icon}
 "Burrito Bison"){kind=icon}
 "Epic Battle Fantasy 3"){kind=icon}
 "Music Catch 2"){kind=icon}