A+... ++++ only ten Kreds to unlock premium? AWESOME, good game, with good storyline and tactics? NICE, balanced gameplay AND an interactive dev? Can't get much better than this!
Remember: The most valuable items in the game are 1. Your life 2. Escape Wings 3. Gems, they increase your stats permanently, and even if you feel strong enough to continue, always use escape wings at a shop the first time you reach it. You'll regret it otherwise.
gold is useless to me at this point. Maybe they should implement a system where you can buy PC for like, 100 mill gold? It's sad how much money I have just because of passive income and the like.