Wraith is a hit-and-run predator. Take down one or two creatures, and consume them quickly before moving on. Since Wraith has low armor, this negates the value of eating a large amount of creatures. When trying to evolve quickly, use the little bit of armor gained from smaller prey to attack a larger creature. If done correctly, you’ll regain your armor from the Monster at the end of the fight, and maybe even a Buff if you took down an Elite (Albino) creature. Make sure to consume creatures carrying Buffs all the way before moving on so that the Hunters cannot pick up the Buff.