Poor default controls, objectives poorly designed and repetitive. Shot last boss constantly with all my powerups, then died before I could destroy the shielding ships. Unintuitive and a real kick in the nuts. 2/5
Too easy- beat it without losing any lives (actually gained one). The enemies were too repetitive, consider having them come from the behind and maybe using scenery to force the player into tough ambushes. Weapons got overpowered too quickly.
Still, I played to the end so it wasn't bad :P