Vintar, what in your eyes constitutes constructive criticism? From where I'm sitting, there's nothing wrong with what Clive said. Hell, he was praising your game except for one single aspect he didn't like. And yet you freak out at him while claiming to welcome constructive criticism. The worst part of this is that your reputation precedes you on this. While discussing this game on RPGCodex a while back someone mentioned being attacked by one of the developers for giving his honest opinion on the game. Another person immediately asked if it was Vintar, because you apparently make a habit of exploding at anyone who so much as says anything remotely negative or critical of your game. I'm a bit saddened to see they weren't exaggerating.
Vintar, you're going to have to learn to take criticism. I know exactly how much it sucks when you pour hours of your life into a project every day for years and then have people criticize aspects of it. I think most of us have been there at some point or another, when we spent long periods of time working on something we're passionate about and then have people criticize it afterwards. Granted, most of us didn't have something with the scope of Lost Alpha, but we have been in similar situations. Unfortunately, that's how real life works. We can't expect our projects to remain criticism-free simply because we spent a lot of time and poured a lot of our passions into it. The moment we put the fruits of our labor into the public domain, we open it to scrutiny and that's never going to change. We can either learn to handle and use criticism, or we can keep getting angry and embittered about by it.
I was going to offer up some of my own opinions when I had more time this morning, because as far as I'm aware your game is still in beta (?) and I feel there are areas where you can make improvements before final release, but I think maybe I would be better off posting them on your official forums.