We are working on the new system balanced recently. We realized that the game has amounts of issues. There are something that we are gonna change.
1.Since shield system doesn't give players enough positive feed backs. We are going to apply a new shield system and defence system upgrade
2.A new system called bullet time system would be added, to increase the positive gameplay loop for players
3.Players would be able to cast multiple skills in the future
4.A new rule will be applied to the game, to increase the depth of the gameplay.