In this game, each character has a multitude of skills to choose from. However, due to the limitation of skill points, one must be especially cautious when selecting skills. Below, I will tell you how to choose skills for the Guardian of the Giant Blade in Resonance of Star Traces. If you are still unsure about how to match the skills for this character, make sure to follow my lead. The following will provide a detailed analysis of the Guardian of the Giant Blade's skills and share some point allocation strategies.

1. Introduction to the Guardian of the Giant Blade Skills:
1. Basic Attack - Wind of Ceasefire: This normal attack is primarily for gaining energy and sandstone, thus there is no need to invest resources into it.
2. Special Skill - Shield Slam: This is the core skill for the Rock Shield flow. After unlocking the Rock Shield branch, it gets enhanced, providing a significant amount of shield value. Although its damage is not impressive, it is still necessary to prioritize resource investment here.
3. Ultimate Skill - Rock Defense Shattering Loop: The main function of this ultimate move is to provide buffs and sandstone to the character. However, since advancement only increases skill damage and the cooldown is long, there is no need to invest resources here.

4. Stellar Rush: A core skill that combines energy recovery with a dash. Both talents can carry this skill. The energy recovered after each dash is just enough to release a rock shield. Given its decent scaling and cooldown, it is considered an important mobility tool and can be used without a target, making it a versatile energy recovery skill regardless of survival pressure.
5. Block Impact: This is a special skill for the Blocking flow. Once the Greatsword unlocks the block talent, the special attack changes, sacrificing interaction effects for high damage reduction. However, as advancements still only increase damage, and the current effectiveness of the Blocking flow in combat is relatively weak, it is not recommended to consider this.
6. Sand Cloak: This is a core skill for the character, continuously providing sandstone resources. However, as its damage contribution is not high, it is not recommended to prioritize resource investment here.

7. Rocky Body: A specialized survival skill that only enhances physical defense. It should be considered when facing high-intensity physical damage, as it can reduce survival pressure. During its duration, it provides defense and, when combined with talents, can also increase maximum health. However, it is not advisable to use it blindly; instead, it should be used as a safety measure under survival pressure, and resources can be prioritized for it.
8. Furious Rock Strike: This is the strongest damage-dealing skill for the character. With a high skill multiplier, the Blocking flow talent further enhances its negative effects, allowing for subsequent high-damage moves while also providing 10% damage reduction. Players who want to deal damage or play as a tank can carry this skill. In situations without survival pressure, it is almost a must-have, and it is recommended to prioritize resource investment here.
9. Sand Grip: One of the core functional skills of the Greatsword, its effect is simple: to attract enemies over a large area. However, in boss battles, it is almost like having one less skill, but it can gather small monsters at a single point, enabling many single-target attacks to have an AOE effect. It is recommended to carry this during the stage with small monsters to improve output efficiency and switch it out manually before entering boss battles.
10. Rage Burst: A combination skill with high AOE damage and a shield, also providing 10% damage reduction. An excellent utility combo, it can replace Furious Rock Strike when the shield flow faces survival pressure. While its multiplier is good, it also provides some shield enhancement, making it a decent option to consider for moderate resource investment.
11. Brave Barrier: A core skill for the Blocking flow, doubling the chance of blocking and providing high block attributes. Its disadvantage is a long cooldown and short duration. Given the performance of the Blocking flow, it is not recommended to invest resources here.

The above is a guide on how to choose skills for the Guardian of the Giant Blade in Resonance of Star Traces. From the skill set, it can be seen that this character is mainly of the type that absorbs damage. You can choose your skills based on the needs of the team and personal preferences. Additionally, you can switch skills between boss fights and minor stages.