As long as you don’t get in the mindset “defender means fromtline and soaks damage” you can easily do well with Toby. My first few attempts were disasterous because of this. Once I realized the range of his railgun though (which is can you see it?), things got way better. He is the perfect little guard penguin.
Also if he curses he apologizes…heck if he kills you he apologizes. Most adorable lil guy ever. Just don’t say that to his face…he’ll murder you (and then apologize).
