The simplest way to break this game down: Giant robot chess.
This game is simple in a lot of ways, executed wonderfully.

Each mech you can use is pretty simple and serves one function, pilots have one ability that ranges from free to powerful (That requires extra resources to use!), stages are small and simple with a random twist every now and then, the bugs you fight are straightforward
With these simple problems, you can figure out a lot of creative solutions, all without feeling too overwhelmed with options or abilities or all that jazz
Like I said: Giant robot chess. Loads of fun, go on and get it