A lot of the gadgets like batarangs, batclaw, explosive gel, smoke pellets, and cryptographic sequencer return, as well as a lower tech version of the disruptor that is aimed and fired like the remote electrical charge from Arkham City, and therefore requires better aim

There's a cut-scene where Batman uses his explosive gel to draw a big circle on the floor and blow a hole in it, taking himself and the character he's fighting down to the basement below

You can also go in using a variety of gadgets at your disposal such as the batarang, explosive gel and smoke pellets

All of the other gadgets are present - smoke pellets, decryptor, explosive gel, etc. are all items that you start out with.

delivers, old favorites such as the explosive gel, the bat claw,

they are so severely handicapped (base health only, batarang, explosive gel, sonic batarang, bullet shield, zip kick, smoke