Talus can do a lot of damage in a 1 vs 1 but his health relatively low. Travel is groups of two or more if possible and necessary. You can force him to use his Rune of Travel early and cut unnecessary damage from you or your team by focusing him.
Currently, Talus' Ultimate is really weak and other than CC immunity, any swift movement can overcome it. Nimble (Literally just 300 credits) can overcome Talus' ultimate.