Saw this on AlphaBetaGamer and loved it.
Linux version works well, using Ubu 18.04 with AMD HD6870. The Yoyo Games Runner also requires libssl1.0.0:i386. You can see all the library files required by running ldd ./Zordak though it's not always clear which files are in which library package (eg: file libcrypto is in the above libssl package).
The art, sound, and level design are all wonderful so far. The pose of her jump while initally unsuited seems a bit odd, like she's leaning back too far, but not really a big deal.
I thought more indication when oxygen was depleting would be handy, perhaps a box blinking red around the oxygen indicator? I didn't even realise the gas section was using oxygen until I was in the last room.
There's one point where you shoot upwards to a tentacle above but the edge blocks you, you have to step out a bit to shoot the tentacle, the edge probably shouldn't block like that. ABG does the same thing.
A lot of people are complaining that this is apparently a Super Metroid clone, as if that's a bad thing? Also I think you've extended beyond that game with things like kick/punch, ledge hang, crumbling blocks, so it feels like it has a bit more variety which is great. I look forward to seeing your future ideas to differ from the exact SNES/GBA gameplay as well.
Will definitely buy the full version.