In the early stages of the Abyss Descent, melee superpower users occasionally made use of firearms, and the "Armor Piercing Bullet" skill was somewhat useful, but in the middle and late stages, it indeed became a useless skill.
Take Lu Heng for example, now when he casually executes a sword strike it produces a sonic boom, its power far exceeds that of a bullet.
If Lu Heng drew an "Armor Piercing Bullet" skill now, it would indeed be a useless skill. The only use it might have is for some fun while playing with guns.
Therefore, once you draw a useless skill, it is as if you didn't increase your combat power at all, and you also waste 1,200 points of Divine Energy.
Of course, if you draw a useless skill, it's not entirely beyond remedy.
The next time you receive a World Task reward, if there is an option to delete a skill, you can remove that skill and free up a Skill Slot.
