was expecting more guides or player interest (as i think this is an amazing game)

So i looked up a "high elo build" and quickly discovered that it doesnt work anymore (changed the point cost can no longer make build)

so right now i have

mighty mines
long fuse
bigger bang
extra fuel
how many? six?

catalysts are

turtle tech
brain juice

I have questions.

Does mighty mines affect damage of ALL mines? This is not explained in the tooltip. i bought it anyways and will find out shortly but i feel like that should be an oversight.

same with long fuse...does that affect ALL mines or just splort?

what is a strong build for grem? any hints/tips?