One of the defining elements of the Metroid series is the ability and nessessity to collect power-ups which aid exploration.
Morph Ball Upgrades
The Morph Ball is one of the most recognizable aspects of the Metroid series. Pressing twice allows you to morph into a round ball that can go through small passageways. It is also faster than walking.
In this game, you start with this upgrade.
This upgrade can be found in the first ruins.
Pressing down while in Morph Ball mode allows you to use this upgrade. It allows you to crawl on walls and ceilings. Pressing , getting damaged, or being hit by your bombs automatically disables Spider Ball mode.
This upgrade can also be found in the first ruins.
This upgrade is in the second ruins.
You can only have one beam upgrade at a time. Fortunately, all of the beams can be found in the fourth ruins in addition to their normal hiding places.
Freezes most enemies on contact. Found in the first ruins.
Goes through walls and armored enemies. Travels in a wave pattern. Found in the second ruins.
Fires three parallel beams. Found in the third ruins.
Goes through enemies. Also found in the third ruins.
What's a platformer without some form of vertical movement?
High Jump Boots
Increases the height of your jump. Found in the second ruins.
Allows you to repeatedly spin jump. Found in the third ruins.
Makes the spin jump instantly kill most enemies. Found in the fourth ruins.
Halves damage received and, curiously, increases your walking speed. Found in the second ruins.