What are some LitRPGs (on Audible) about Tanks?

Preferably solo or mostly solo (Think Derek Hunt from System Universe)

I started listening to The System Universe series all over again because of the most recent release and forgot how much I enjoyed this. Although he's not your typical "tank" he does still consider himself as much, and in fact, did start out as one and just "evolved" into something a little more, but he still has an emphasis on his defensive stats at all times. I loved seeing him praise that kid tank in the latest book because they're the "best class"