Dev Log #1 Level and Perks

Since the game has been released, I have started to work on new content. The first feature that will come with the next update is level and perk system. There will be 2 different perk categories: Army and Trade. Perk categories are working like skill trees. So to unlock a perk, you should first unlock pre-required perks. You can find the plans for perks below.

Every time you level up, you earn a perk point. With perk points, you can unlock perks. Each perk costs one perk point. You should earn experience points to level up. Experience points are equal to the amount of money you earn. So if you sell an item for 900 golds, then you would earn 900 experience points. Every time you level up, your experience points will be reset.

Also, I want to hear your opinion. What is the best thing about the game? What should be improved? What is your first impression? What should be added?