How to earn in Voxie Tactics?

Can you please elaborate on the various ways one can earn in Voxie Tactics? Is it primarily through in-game achievements, or does it also involve staking or trading of in-game assets? Additionally, are there any unique features or mechanisms within the Voxie Tactics ecosystem that allow players to generate income beyond just playing the game? Understanding these aspects would help me determine if Voxie Tactics is a viable platform for earning.