Lego Batman is tough

After completing the hero mode. Yoid think i'd have enough to go through freeplay.

Nope, then you got to find specific red bricks containing 3 keys: blue key, silver key, and gold key. This is to beable to obtain some of the minikits. 

Then in order to get the the rest of the hero mode mini kits. (without spnding a bunch of studs. You got to play the story of episode 2 chapter 1 to get penguin unlocked so you can jump and glide to get out of reach mini kits.

I did most of this now I just got to go through the rest of the hero mode levels on free play. And finish villian mode on story and free play.

In Lego star wars you coukd just get the minikits in free play no keys needed.