Would like to mention Light Attacks, since they can be any size and deal lots of damage.
Avoiding Light Attacks could be difficult, or easy, most of them are continuous and expanding.
Continuous are Lasers, while expanding are Flames, or other elements.
Just won against that Pyro Tower(Yeah, the flame shooting Tower comes after the water tunnel...) which mostly used expanding kind of attacks.
Anyway, fire attacks are slow, and most of the time short ranged, so it's better to stay from them at a distance.
Now water Boss, He is made of some Black material and changes shapes every time He is beaten, and then it's just all over again...
The Black Boss, whatever His shape is, shoots lots of lasers, those are continuous and very thin, requires early action.