A submission that contains most of the key game mechanics for a platformer, interesting theme, and a relatively tight control scheme.
The double jumping's effectiveness is entirely dependant on when you press the jump key the second time, with late presses being almost useless. Enemies' pathway was dependant on objects which led to circumstances where enemies were levitating whilst gently falling to the ground. Hitboxes for the enemies were awkward and could have used some work. Overall, this game had everything there, but felt unpolished. A portion of your development time should have been focused on playtesting and ensuring that players get the experience that you intend. Finally, it was good that you referenced the 8-Bit Soviet Anthem video, but is that really open license. You really need to be careful with using other people's work, some people wouldn't allow you to use them without permission or without the correct license.
Overall, this submission meets the requirements and is perfectly acceptable for the timeframe it was made in, but dedicate time to polishing and bugtesting in the future. What have you learned about making games in a team that you could take onto future projects?