Well done!
This is so good I will make a wishlist for episode 2.
-Sometimes it is hard to pick things up because they move by so fast. How about a radius magnet effect where the closest object to the cursor within a small radius gets picked up, instead of you having to click exactly on the object?
-I also think a good idea to leave lasting blood splatters (at least for a few seconds) where people die so it would look cool after you destroy a crowd.
-If up and down movement could be feasible, it would be great because then you could allow your toaster to crush cars and people by scraping into them real low.
-Instead of dots for bullets, which are harder to see, how about light lines so you can see their trajectory?
-Looking forward to the sequel! I hope you include unique, different, new weapons and enemies!