Thank you for playing!
The difficulty grows exponentially, that is why lvl 1 is very easy.
In a normal session getting from level 1 to level 2 takes about 1 minute (assuming you don't get hit by any bullets)
From level 2 thigs move quite faster it takes about 30 sec to get to level 3.
I strongly recommend giving it another chance as you will see that after level 1 the game becomes more challenging.
And as a reward for doing so you will get to see the ending.
Yes the color scheme doesn't play too nicely, that is caused by the glow environment which darkens some of the colors. I tried tweaking as much as I could, using so many gradients didn't help either =D. Glad to know things are not too hard to see. I really wanted to have things that glow....