Yeah, we are also stunned by what we were able to pull off within in this week. A lot of time and work was put into it tho, but it was totally worth it :D
You are the first one that is mentioning the spikes and I have to tell you that our graphics designer was also not happy with how I used them. And I also agree that the spikes are not so nice and some point should use less spikes (level 2 - dash). Unfortunately the time limit prevented us from changing the levels. If we ever continue on this game, there will be much less spikes, maybe even none because they do not really fit in such a futuristic theme.