Yeahhh this is great!! Love the combo of big sci fi guns and wacky magic spells! Egyptian tombs and architecture with a starry space sky is already so iconic. I got just a few thoughts:
When you get hit, I think having the whole screen turn red is kinda distracting, maybe you could make it so that it's just a red glow on the sides instead? That way it's clear you got hit, but it doesn't distract from the action. Also, adding an icon that shows where the last hit came from would come in handy, especially in the larger, more open levels.
I think the FOV was just slightly too low for my tastes, adding a way to adjust it would be pretty neat! I know some FPS fans like to really crank it up LOL
The game's overall difficulty feels a bit too high, like for example there's a lot of strong enemies at every corner even in the first level, maybe you could have a few selectable difficulties that have less enemies on easier modes and more on hard.
Overall, this one's really cool, fun to play, and I'm excited to see what's next!!