Pretty sure these have all been mentioned
Weapons:
Shuriken - Make it boomerang style with auto tracking so if you throw it while your character is on the crosshairs the shot will land no matter what. Can’t have too much ammo or deal much damage if that’s the case.
Auto-Tracking Plasma Caster - Have it lock to a target like in the movies, at the expense of reduced damage. FT can dodge the shot only by taking cover.
Whip - Low damage “ranged” melee weapon. Cannot be parried.
Gear:
Proximity Mines - Self-explanatory. Non detectable unless using UAV Scanner or Sixth Sense
Hanging traps - You get flipped upside down. You need to cut yourself down and take fall damage.
Grappling hook - Can be used to reach “unreachable areas”, draw an enemy closer (in disorientated state), or leap further from a branch like in Batman Arkham City.
Kujhad - Deployable device that will temporarily disrupt FT mission objectives making them unable to be interacted with or taking a longer interaction
Shard - Quick slight HP boost instead of long prolonged healing. Can be used before engagement to increase HP pool before attack, sort of in an “armor” way
Falcon drone - Find the FT wherever they are and tag them.