>>356425461
there used to be safes that you could open with buyable keys, now safes have been removed and replaced with daily skin drops, not sure if the microtransaction tag still applies
map dlc is only required for the host, weapon dlcs are somewhat optional since you can still do well with what the base game gives you, mostly just retextured guns with smiilar stats
if you join the Payday 2 Steam group you get some free stuff too