T9 is an extremely hard fight but I think it's ok. I've been stuck on it now for well over 4 months of nightly runs and it can be very frustrating. I find sometimes the DF is getting better but due to not having time for a static I don't expect to clear it before the expansion although I'm pretty consistent up to dive bombs now.

I'd say T9 is the first real major roadblock/challenge for many people and I'd also say that T9 will be where most people give up on coil it's certainly not for everyone.The phases change so fast now and give very little time to react I find when most people hit a new phase they are instantly dead because there is so much going on in this fight.