Arkham Asylum Explosive Gel Guide: Walls, Puzzles, Combat — Master Batman: Arkham Asylum Explosive Gel with the Aim, Spray, Detonate loop, wall...Arkham Asylum Explosive Gel Guide: Walls, Puzzles, Combat — Master Batman: Arkham Asylum Explosive Gel with the Aim, Spray, Detonate loop, wall blasts, Riddler puzzles, and crowd control. gamepriceradar.com Show more