Oh, I forgot some weapons.
Black Star
A high-energy weapon used by Reaper troops to destroy armored vehicles, the Blackstar attacks enemies at the atomic level. Localized fission and fusion reactions destroy nearly anything in the blast radius. The weapon self-destructs as it fires, restricting it to a single use.
The Reaper weapon nicknamed Blackstar is so advanced that Alliance scientists can only offer speculation about how it works. The gun appears to exploit an element zero core and mass effect fields to fire gravitational singularities -- micro black holes -- that revert to their natural lethality when they impact a solid object. Researchers theorize that the blast tears apart the strong nuclear forces that hold the target's atoms together, resulting in a localized fusion reaction in light atoms and a localized fission reaction in heavy atoms. If that hypothesis is correct, the weapon alters nuclei, thus changing the chemical composition of the target. This destroys organic tissue, corrodes surviving armor, and leaves a visible trail of light-emitting particles.
Although some might argue that the Blackstar’s single-launch capability makes it a liability, its capacity for utter destruction is essential when the user requires large-scale, instantaneous damage.
Hydra
Before the introduction of the M-560 Hydra, missile launchers either focused on bringing down a single armored target or simultaneously neutralizing multiple unarmored opponents. With the Hydra, a soldier no longer needs to choose between the two.
The Hydra releases a barrage of miniature missiles, each guided by an independent homing system that seeks out exposed enemies. On impact, three shaped charges per missile explode in sequence. The first overloads the target’s kinetic barriers before the second destroys its armor, clearing a path for the third warhead to detonate inside the target.
An Alliance missile launcher equipped with an auto-lock feature, the Hydra is capable of firing several homing rockets in one MIRV-like shot, inflicting massive damage on multiple targets in a matter of seconds. Newly released to Alliance special forces and making use of the latest-generation ballistic missile launch technology, the Hydra has found much favor in combat situations that require opening with a heavy first strike.
Centurion
Shotgun with adjustable shot grouping. Best at medium-range combat.
I might have missed some more weapons.