I kinda commend this one as it actually adds something new to the formula with an gun that shoots you higher than a normal jump is able to. Sadly there is under 100ms time window to achieve the perfect jump with the gun which makes this pretty much impossible to finish unless you're some kind of god of gaming and are able to achieve this multiple times in a row.

I did manage to finish it eventually but I used basically save states with copy pasting save files back and forth after every failure which is not the way these are suppose to be played.