Have a little patience, it's a small team from Kyiv, Ukraine. They are always working on something and they try to release something new, when it is ready. The main dev tends to be fussy about quality, so that adds a bit of time.
It is also a small player base, so invite a few friends and donate a bit of money, if you can, to encourage their efforts.
There is already a lot of content, more will become available, as you level up your hero.
Feedback is also useful, to the team, some of the players better ideas are even implimented, if they are good enough. You won't get that with the bigger games, with their many, many microtransactions, expensive dlc (down-loadable-extra bits, for yet more money.), expensive skins and so on...........
