I like the randomized switch time causing you to switch from firing to dodging on a whim. While I liked the effect you used for the switch it would get a little bit distracting if it rapidly switched but it wasn't a huge deal. A few things I would've like are to be able to hold down my mouse to shoot, and for the rooms to be a bit shorter. I wouldn't say the room length is the real issue though, it's more that I would like to be introduced to the other enemy varieties sooner rather than later.
Viewing post in Gun Switch jam comments
The switch effect can be distracting but it also marks an important event, so I didn't really think about the distraction. For the auto shoot, I did consider it but I was scared that the player would have the tendency to just press it all the time and not really acknowledging the switch, giving it a boring kind of gameplay. It's one thing to hold down the mouse but another thing when the switch happens and you are in the moment that you just forgot to shoot, giving a frantic and fast gameplay. At least that's what i think :)
The rooms would benefit a lot from adjustments and a true progression but time was pretty limited for me haha