Glad you like it, but demos just can't do Monster Hunter justice. It gives you a good sense of how the combat works and how each weapon feels, but the combat is only the half of it. MH has one of the best crafting systems I've run across in a game. Each monster can be carved after the hunt for resources, which you then use to craft weapons/armor.
Crafting a full set of armor will trigger bonus stats like increased stamina, elemental resistances, etc. It's not quite a set bonus, since skills are unlocked by points and each piece of armor has points towards a skill. Like a the helm may have +5 to Fire Resistance, Body has +3, and Legs +2. Once you hit 10 points the skill activates. This allows you mix and match armor sets to unlock a beastly skill set across multple sets of armor.
After the playing the demo, I'm super hyped for the full game to hit next month. I see myself easily dumping 200+ hours into this game.