New features:
1. Optimized bosses' rewards by giving you choice to select them.
2. Added more mechanisms and interactions.
3. Added more basic levels.
4. Added more props.
Bugfixes:
1. Revised the throwing curve to make it more realistic.
2. Enhanced the time delay of enemies when hit.
3. Fixed the bug about an elite enemy's respawning.
4. Interface and UI bugs.
5. Description about a few props.
6. The animation of the MC and a few enemies.
7. Optimized a few levels.
