@ Joesy
Tazer requires a knife to slice the "energy box" open
Duct Tape is used to "glue" limbs back

Not 100% were to leave bug reports so I will leave it here :/
When you use The Riddler's Staff on someone it says something like "Player is now under your controle." Yes control is misspelled.

I don't think charging a Tazer is possible or I haven't found the way.

Duct Tape seems to be utterly useless.

You should update the Flamethrowers animation if you can.