Great game !
What I like :
- Game name ;)
- Simple retro visuals
- Music
- Juicy
- Boss battle
- Leader board
What could be improve :
- Give a safe 1st phase for player to train/experiment with controls.
- Give time to player to see spawn point before enemy appear.
- Some more juicy :
- screen-shake when enemy explode
- slight backward camera movement when firing
Overall game is fun, very challenging.
Congratulation.