Cool level, visually it's neat and the large open bases are a nice touch unconventional from most levels. Difficult to track down enemies though due to the long, narrow channels. Whenever I tried to chase an enemy, they would simply fire behind themselves. Because the channels were thin I couldn't strafe to avoid the projectile damage and still be able to catch up. If I tried to overtake them in an adjacent channel, they could simply revert direction and avoid me. The portals only compounded this problem. To fix, I would recommend either widening the channels or adding gaps in the vertical walls in a way that still maintained the aesthetic theme. I would also change the portal outputs to areas that were more open and didn't have quite as easy a route to the thin channels.