You just combined two of my favourite things: Mechs and RTS! 
(Loved the Mech Commander games back in the day.) Looks great, amazing work!
As I want to create a RTS in UE4 one day, too, here’s a couple of questions for you:
- How did you go about the tile-based level generator and the movement? Working on a tile-based game myself right now (but with 4-sided tiles) and found that there are not a lot of good learning resources out there for my approach (puzzle game with a directly controlled character), so I rolled with my own solution more or less.
- Did you create the assets yourself, too, or are these marketplace assets? Your mechs are modular from what I can tell in another video?
- How does fog of war work for your AI when it’s a post-process effect?
- How long have you been working on this? Previous UE4 experience?
- [EDIT] Forgot one question: Why did you combine hex-tiles with an RTS? Usually only turn-based games use tile-based movement.
Keep up the good work!
Grüße aus Stuttgart, Michael 