Great game!
After hours' struggle, I finally succeed!
Here is my walk through:
- unlock character Diamond , and shotgun weapon. Both are cheap and effective.
- level up move speed and weapon power, and develop freeze skill tree
- 1st boss is easy, for 2rd boss, try hide and attack strategy, Diamond is strong enough to knock him down.
- keep running in one direction until countdown is over. At this stage, It's just a simple bullet curtain game.