Wiktor
Member
Heck, which DC characters could even take Deathstroke in a one-on-one fight? With this version of Slade, it would probably take Superman himself to take him down.
Plenty could. Even dude like Azrael propably could beat Slade, seeing as the guy can bench press 8 tones. Arrow's characters still are very lowpowered compared to what's happening in comicbooks.
That said, Slade is powerful, but nobody is unbeatable. Oliver already took him out with venom once and all he had to do back then was to slit his throat and be done with it. Bullet to the head or some kind of highly explosive arrow could work as well. Bassicaly the way to beat Slade is to forget about trying to fight fair.