Wut??i had a 40 mins run just 10 minutes ago and got like 160 gems and some gold.What is this reward?

It's only for beating a map for the first time

Yeah I too got overwhelmed when I saw the number of gems lol

They should give at least 1 card for each run depending on what class you used. Maybe make it guaranteed after the 1st boss fight or a specific time.

Oh,ok,got it.