Not sure you can call it a dump with such a low volume. There's simply no buy support at all, so the price naturally falls. But this is far from being the only coin in this case. Even coins with active dev's like KEY are dumped to oblivion and have no buy support.
Each new month is worse than the previous one since july.
It's probably to all the BTC recent volatility, where the whales are now playing.
halcyon's dev not posting for 1 week doesn't help thought.
Yes it is the problem. Only maybe 5% of coins last for more than a month lately (2 weeks?) because the market wants "new new new" then fud about "why new coin?" in new coin threads

HAL investors were waiting on MintPal for big push in HAL price, they PM me on Twitter. Mintpal dies and they lose interest in HAL, this is the real reason for the price drop, not a forum thread.
I paid for the payment gateway in HAL and while the price has dropped the programmer has been slower to respond

it is the backbone for the Store but only 2 people have expressed any real interest in the store

HAL anon works well and I pay for the servers. Paying rewards with increased POS payment for masternode is not something the coin core likes any and it is 4 weeks of work for me so far and nobody has even PM me any more about running masternodes. The question is what to do now?
Store will be released when gateway is finished, we will see the interest.
I don' think it is fair to gauge the interest in the store on the small response you have here. Most people, like myself, don't say much. We wait and judge the quality of the coin and dev based on results. Not FUD and this infected forum.
As far as the masternode goes. I have been excited about that since you first mentioned it and have just been waiting for the release so I can get it up and running.
There are plenty of people who believe in you and the coin. Most of the people just don't feel like arguing endlessly with trolls so we just watch from the sidelines.
Keep up the great work. I am excited to see whats next.