Metroid 1.5 2D Thread (It has its own now!)

[Aquarius]

Some notes:
-Beam switching currently has unfinished controls--right now it's done by holding Scroll Lock and pressing a directional button.
-I tried limiting the fire rates of the other beams like in the main Prime series, but it's glitchy, sometimes temporarily disabling those beams.
-The build shown here lacks a charged Wave Beam.
-The beams are currently incomplete.

I'd like feedback on what possible control schemes might work for beam-switching.