DEMO UPDATE v0.9.3a

- Reduce difficult spike by adding iframe for default difficult. ( Heroics 0 )
- Slightly reduce enemy attack speed for default difficult.

HEROICS level
After complete Choas 3, Next Heroics mode will be unlock ! you can select Heroics level on the level selection screen.

Heroic level will add more challenge to the game level.
- Heroics 0 - default difficult mode
- Heroics 1 - Improve enemies attack speed and damage, boss gain more health.
- Heroics 2 - improve horde of enemies, enemies and the bosses get more attack speed, damage and heath
- Heroics 3 - scale up all heroics 2 effect, all enemies and boss gain more move speed.

- 3 new achievements
- Add more info to level selection screen, Boss time and number of Angel totem.