This game is really engaging for the first few levels.
I knew that the later levels are going to go off my expected difficulty curve and I was right. This game was hard. By making the game difficult to the player without them asking for challenge is not quite a perfect design.
It would be totally ok if there are challenging bonus levels. But making levels in main game hard that means some players wouldn't be able to complete the main game.
Restarting the level is quite a bad punishment for dying in a big level. Even if it's easy or hard I still don't tolerate making my LONG way back to where I was.
The view doesn't show the whole level and there is no mini map. This can make the player run into surprise attack which I couldn't react fast enough, and I believe most player wouldn't have that such fast reaction.
This game failed to capture some element of Dos and Don’ts in game design list. However, this is really satisfying platformer shooting game this is already good for a game jam (despite it was made in VERY LONG development, longer than the event time). Good job.