I think I was lucky to find out that I had to click on rocks to mine them. Maybe my history with games such as Factorio helped me to find that out. A little more explanation would have helped. I got the rocks, got the mech, the mech went outside, it killed the boss (and killed the happy thing that came out) and the world exploded. I saw an enemy, but it did not come close. Maybe I missed parts of the game? Anyway, short but powerfull stuff :)
Would have liked to use the mech and shoot with it.