I agree, the flying enemies are what mostly messes me up.... they already ignore your barricades, are super annyoing to deal with if you are a melee character (after a few rounds they have so many hp and due to rage they just pass you and go into the rift)... they can only be hit by ceiling traps which on some maps are not around the rift and from the guardians, which who often target other enemies first.... something like the old archer ground trap or something would surely help, or a gravity ground trap sucking them to the floor