To many problems
The Idea of this game is actually entertaining, but the overall game play is where it hurts it. Units that you order to attack a certain structure will attack for a brief period then wander off and start attack random units off in the distance, the fact you have to actively remind your soldiers while running back and forth between searching for mineral deposits, fending off on-coming soldiers, and repeatedly remind your soldiers to attack a group or structure hinders the continued game play. There is also the upgrade issue, either you allow the upgrades to be available at the beginning, allowing players to gradually form better units per level provides a problem when enemy units already have achieved all upgrades before you and you rush to build either a huge army you can't micro-manage, or you just quit because you struggle to fight off an enemy that can tear through 20 of your units in 2 seconds. Even as a Real-time Strategy, you should have more control over your situation than pointing and clicking randomly and hoping you get an outcome in your favor.