........
Dude...
I see how you tried but what the hell.
1. The screen size is way too small i could barely see wtf i was shooting at.
2. These machines don't die they have more health than you do for god sakes.
3. Your energy level is way too low, the game lasts less than a minute when shooting like crazy.
4. You should be able to walk around more just instead of just strafing.
Conclusion: This game just sucks you tried but not enough. The flaws in this game is just too extreme, don't try again.