Doesn't matter how good you are - when you're going fast, you can't avoid the instant-death spikes or UFOs. Getting the 3 mil badge is just a question of "will the game let me win this time?"
It really does play itself after a couple levels... your gun is really too weak to make much of a difference. Just fill all the elevators with lasers (and machine guns until you can afford them) and all your floors with elevators, and there's no real need to do anything.
Screw this crappy game. Needs a major overhaul - lags like hell, it becomes literally impossible to avoid the countless projectiles, you cannot possibly do enough damage with any of your guns to overwhelm the opponents... and you don't even get mercy invulnerability at least half the time.
Level mode is pretty fun. Survival mode, on the other hand, is pathetic - no weight given to smaller rocks being generated for you to get your mass up with, leading to giant clusters forming and dragging you into them while you have no rocks that can boost you up. Needs some SERIOUS RNG editing to survival before you can call this a viable game.
Poor hitbox, ball keeps ignoring the line, draws a crappy set of straight lines instead of an actual curve... needs tons of improvements to actually be fun. There's a difference between real and fake difficulty - this feels like an easy game being sabotaged to make it hard instead of a legitimately hard game.
Games which are difficult only in that you have crappy controls and need to make perfect use of them are just not fun. I can beat the levels, but it's just not any fun TO beat them when I die because the game interprets little taps as "fling yourself" and the like.