Metroid Prime/Secondary Items

Weapons
Unlike Super Metroid, Metroid Prime does not allow the player to combine separate beams into one, due to the fact that each of the four main beams has a unique use. Also, each beam has a Charge Combo that can be acquired that utilizes Missiles to perform a more powerful attack.

The 12 Artifacts
There are 12 artifacts spread throughout Tallon IV. These artifacts must be collected in order for Samus to gain entry to the final area.