Warning: Pain of grind imminent
Everything about this games is great except the grind.
When making a game there has to be something in it for the player: experience, items, a cut scene... anything to reward the player for playing the game. Second, the reward must be worth more than the effort; either a kind of something that they couldn't get otherwise or more resources in than out. This game dosn't do that!
Example: In this game there is no experience, so my character are fighting for equipment and items only. I go into a battle and randomly it is 5 bad guys appear (against my 3). Its a tough fight and I use three med-kits and a grenade to win it. Then: my random reward was NOTHING! It then took me 12 fights to get back the med kits I had used. I entered that area again and fought the big fight: again my reward was nothing!
Why should I play if there might not be a point in playing.
As a demo this is the worst possible kind of advertisement for the "real" game. If I can expect to play a game that might or might not be worth my time, then it is clearly not worth my time.
Reward system: -bajillion
Overall: 3/10 and unfortunately this is also my optimism towards the full thing.