This game is a great blend of simple concepts and in-depth strategy. I only had three issues with the gameplay, the first of them being the limit on how far ahead you could see. In my opinion, there should have been 1 or 2 more events that could be seen. This made it particularly hard to make the quick decisions on whether to buy or save, hoping that something better was on the way. The second problem was the increasingly expensive upgrades that did to coincide with foes giving you more money. Without getting a gold voucher, it is virtually impossible to gain access to higher levels (7 and up) of equipment. The last nuisance of the game is that once you gain the Astral Armor (lvl 10) you can no longer use blacksmith stations to restore hp. In my opinion, they should still serve in a healing capacity past that point.
Although it seems like I'm only criticizing the game, I really did enjoy it. Also, here are two rules of thumb that allowed me to complete it.
1. Your armor should always take priority over your weapon.
2. Once you have upgraded your armor twice and your weapon once, always try to have at least 500 gold. You never know when that gold voucher might show up.
In response to Asona, it is possible to kill a dragon without the Divine Edge. You do need a good set of armor and weapons, as well as an elixir, and a good deal of luck. If it is early enough, the dragon won't be as strong as they normally are, and you can restore your hp at the last second with the elixir. Don't get me wrong though, you still need to be lucky.
I enjoyed the game, and I think it is well worth the 20 minutes / 2 hours it takes to complete it.