That was a tough one. Trying to categorize it.  English is not my native, so....
Good: 

•  Overall Music theme.
• Overall Graphics, but...*
• Found all coin-things. Proud of myself.
• Controls feels....interesting. Actually in a good way, of course.
• Gameplay was easy enough, for a Casual like me. (for some people it may be not so good....)
• Want More!!! And that always good for games, don't it?

Bad:

• First time i launched game, it is crushed. But it can be my fault.
• Next time when i start, everything was alright until i open pause menu, and go to the controls. Game freeze, and Console start to print thousands of Nulls. For the Third Start doesn't seen any problems. 
• Font in game not set properly enough, to read in 16/9 Resolutions. Many spaces between letters,  "WASD" part was covered by coin-thing, and i can only read "WA" part.
• When Transition between scenes with additional "Border" and without start to appear, My Frames fall from 120 to 15-13. Multiple times for short period. Something like 1 to 3 seconds.
• When jump above aura(parts? bits?) hero start lagging like crazy. FPS in this time stays untouched. 

something in Between:

• So you can как перевести закликать, ребят? ** Fast-Click enemies when they charged, and don't let them to your precious body. 
• Inventory is desperately needs canvas close button, or closing when you pressed any button.
• You can hide a console, but  in my opinion, it is actually good to have it in Alfa/ Beta-testing.

 *Light under the water is don't  belong to pixel styled game, but it's only my opinion .

** Not from Russia.

That all... I Think?