Probably of the best games created and some advice for you
This game is honestly a very good game. When I played it, it didn't take me long to complete it. Another annoying thing about this game is you get stuck quite alot i.e too many enemies at once. I'd be careful about the last level, even if you get max health points he can still kill you with his brain power. Also upgrade your weapons to max level if you want any chance of beating him. You need the deadeye mine gun and the laser gun. Hope this helps coz it did for me.