you need to switch weapons but you could defeat flying enemys even with red and then the rewind add nice tactical element...
what i first thought by the little "truck" enemies with the blue shield that im supposed to hit them with the blue weapon xd
i needed a little bit to get used to the controls and so but i was ok
but yeah something is wrong with the switch button...intendet or not, it feels wrong xd
but overall i had fun ^^ nice game !