Hiroko's Tracker

A destroyer is a soldier specialized in heavy ranged weaponry. Destroyers can range from big bullets to huge explosives. In Hiroko's case, as a cyborg, many weapons were placed inside his body, allowing him to use heavy weaponry from inside his body.
Tier I: Your capable of using heavy machine guns, hand size big ammunition, little explosives, and fire-related weapons up to mid range. These are capable of dealing piercing, blunt and, burning damage to wooden structures as well as second degree burns to humans. Weapons this tier cannot be used underwater.
Tier II: You gain the possibility of using bigger and more complex explosives as well as basic rocket launchers. Your damage is capable of completely destroying both wood and stone as well as dealing considerable damage to steal (while not breaking). Long Range is unlocked at this tier. Weapons this tier cannot be used underwater.
Tier III: You gain the possibility of using both high-quality rockets and torpedos. Some other weapons such as some explosives can now be used underwater. Your damage is capable of destroying, piercing, and melting materials as resistant as steel.
Tier IV: You gain the ability to use some weapon based lasers. You are capable of destroying, melting, or piercing almost any material except for diamond, sea stone, and other strong minerals like those.

Tier 1: You have learned basic martial arts. This consists of mostly up close melee hand to hand combat. Your techniques are able to knock around beings specifically around your size, allowing you to get a higher chance of continuing the attack.

Tier 2: Your techniques allow you to knock around beings larger than you, such as large animals. Your skill allows you to throw ranged attacks through techniques. You’re able to use your body to break through hard material such as stone.

Tier 3: Your techniques can allow you to knock around giants for a chance to continue the offense. Note, this does not mean you will send people your size flying. Your techniques allow you to break through steel. Having more experience as a brawler, you can adapt to other fighting styles and eventually create your own method of performing them. Note, you cannot do this in the middle of a fight.

Tier 4: You become capable of learning several different styles of fighting. Most moves that are physically possible for other people become physically possible for you. However, most people once reaching this point tend to focus on mastering their previous abilities.