Looking for build to complete challenges

I missed out the last couple seasons so Im a bit behind on what are good league starters. Any tips if my goal is to complete the challenge rewards as quickly as possible? I played gc totem 3 seasons ago and played kinetic blast(enjoyed kb build cause it was so crazy fast. Got my first hh).

Thoughts of a fast play style similar to kb that could also help me get to completing the challenge rewards quickly?