Nice touch making it so you can't control the wheelchair while aiming/shooting! It's quite metaphorical to arm yourself in wheelchair so to speak :)
The shader composition of the cold open cutscene got me excited to play more.
The grime, grit, and blood of the environment is very compelling. I wonder why the dead patients sprout legs and start chasing the player? If you wanted to lean into the survival horror aspects, you could add vision LOS cone so you would have a harder time seeing what might be lurking in the shadows. Tho ur game is 3D maybe this page could give you some inspiration if you want to further develop the game.
Tank controls are perfect for a wheelchair and I'm curious to learn more about the setting of this mysterious hospital hell realm. One small note, there is a spot by this door at the beginning where you can get stuck.
