Maybe game is easy, but it's enjoyable like hell (I mean REALLY enjoyable). You can play demo if you unlock 100% and go talk to the computer i sacred place. I look forward for the next game =)
You can go straight up to the Vanguard just clicking the buy button (you must have the materials, but you don't have to buy each single vessel). Probably a bug =P
The health thing is a bug too, you just have to attack the enemy. In normal conditions health is restored in a city and it's up to 100 again when you leave it. The game is full of bugs and too easy. If neither changes my rating will be 1/5
My suggestion would be to remove marking the incorrect boxes - it would me much more fun and a bit more difficult. Now you can simply try things out and when you finish replay the board to max the score. Also there is huge probability of missclick, especially when you mark several boxes ahead.
Most of enemies (bosses too) are venerable to attacking from the same spot as they are located - not only most of your bullets hit your target, but also their targeting system seems to fail =). Of course some bosses have very small dissection, so you have to figure out where to stand. The only boss I couldn't defeat this way was the last one - but his semi-boss is quite easy.
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