Here is a description document of each Chapter & Boss.
1-2) Boss of Chapter 1

Mariner uses Dodge Skill.
When Mariner’s body glows gold, it becomes invincible.
2-1) Chapter 2

On Venus, Helmeted blocks, Immortality Blocks, and Bombing Blocks appear.
2-2) Boss of Chapter 2

Venera uses Smoke Skill.
When Venera’s body glows gold, it becomes invincible.
3-1) Chapter 3

On Earth, Masked Blocks and Neutron Star Blocks appear.
3-2) Boss of Chapter 3

Laika uses Block Enhancement Skill.
When Laika’s body glows gold, it becomes invincible.
4-1) Challenge Mode

Get the highest score with just one chance without a time limit.
4-2) Bust system in Challenge Mode

When a burst system occurs, all remaining blocks on the current map are destroyed.
Furthermore, Block breaking and combo scores will increase by multiple such as x1.5, 2.5, etc.
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