Nice, but not great
I'm looking forward to part two, let me say that much. I'm a fan of the underapreciated shooter genre, this game put me in the mind a lot of tiger heli, which is what I useually use an example of the genre, with gradius and R types being the more better of said genre. The idea here is original and fun, but lacks depth.
Good job though, I think I've now played it about four times(thats loading at different times with countless games played) and its rather amusing, but it needs something... maybe if the hero could use special attacks or pick up weapons, that would be interesting.
Also controlable boss robots should be included in the next one, I think that would be very fun to play as a boss.