Huh, well that's interesting. I guess some balancing is in order, because i'm inclined to agree with you. Problem is, i don't know if i should make 6 easier or 7 harder. Probably the former, because level 6 contains a disproportionatly large number of dick moves compared to 7. (AKA red wedges EVERYWHERE, paired with an ungodly amount of yellow lasers)
However, i can reveal that the levels 8 and 9 are most definitely harder than 6 and 7, but still not impossible (since i did them both on Nightmare on the first try). You see that screenshot with a gagillion yellow sentries? That's the end of level 9. It's likely to be naught but a warmup for the coming boss. :U
Also, i'm glad that defense seems to be relevant to gameplay, because i've been worried that just pumping everything into offense would make defense redundant. Granted, when i play myself, i heavily favour offense, but on Nightmare i find it rather necessary to also get armor and shield. I guess that part of the game works fine then!!
@SlyBash: Hey that's really nice! Might be a tiny bit too... I dunno, soft? For a boss fight, anyways. I'll definitely try it out though, because for all i know it might be a perfect fit.
@JellyNinja: Great! I'll be looking forward to it. c: