Hey more updates :)
I've been a bit busy so I think I missed a few things it seems :p
Considering the theme you're going for, a kitchen arena really is a good place to start XD, i really like the fact that you made the play area more than just the top of the stove and "table" and its a nice detail to have the oven's handles as platforms.
Art wise i'd say it looks nice, simplicity can be a good thing here it's cohesive with the rest of your design :) the only thing i'd point out would be to improve readability, would be to have your background elemens (the oven fridge etc...) be a bit more faded, and have more emphasis on the "handles" and "top of the table" so that you can identify what's a platform more easily (since your game will probably be more about fast pace battles with quick thinking) Otherwise it's a nice improvement from what i see from the previous style you seem to have had for the kitchen ^^
The slight randomization of the arena is really a nice system, and the color coding as well as the ammo indicator to find the next ammo box when not in view are really neat details to improve player feedback.
Your game is taking shape and looking good, keep up the good work cheers ! :)