This game is a lot of fun, just a little unforgiving when you boost too much because sometimes the turningspeed is just way to slow for breaking so you have to dodge walls, but then you just get faster and faster until you eventually hit a wall.
In the first levels that kind of panicmode gameplay is super exciting because there is still enough room to correct your mistakes, but when the tunnels get to narrow the only possibility is to fly super slowly and every little mistake kills you.
Maybe a little less thruster power so you don't make mistakes that often or a faster turning speed so you can better correct you mistakes might be a way to solve these problems.
Anyways, I really enjoyed the first few levels, so thank you for this experience! :)