shift just means you run as the character not a actual dash (some may not be able to do so cant remember which if any of those still)
not all characters have the Q option and the ones that do you have to either do a training interaction or become the character a second time to unlock
f3 only works if you have gotten another outfit at the towns store
c i dont think works unless you have the supporter version
left mouse works if you buy the water gun first and have to be in free look mode
(not the creator but will try and help how i can