Batman using explosive gel to blow up a wall inside the GCPD Building at the Burnley District in Batman: Arkham Origins in Batman:AO

The Explosive Gel is one of Batman's gadgets in Batman: Arkham Origins

Can be used to blow up walls and structures

Batman will spread the gel in a bat-symbol like pattern on the structure he wishes to blow up. He will then detonate the gel and the wall will collapse or a hole will be formed through which Batman can go through.