Ir a por todas

Ir a por todas
 

Context
An exam. Ir a por todas significa que te preparas muy bien y te dedicas exclusivamente a ello pk vas a por todas.
English?

I think it means to pull all the stops out. or to do your darndest or
going for broke.

go all out
go for broke
pull out all the stops

Go for it!
Go to it. (More in the sense of to begin vigorously)
To shoot (for) (at) the moon! = Ir a por todas