Actually pretty fun! High score 26 on a touchpad. I only wish that when the tentacles swiped over it stunned the ships for a viewable amount of time so i knew how long I had before they fired again.
Interesting idea that suits the theme well. It is quite repetitive and there should be an animation of the ship being destroyed rather than just vanishing. Not sure the tentacle design matches up with the design of the monster. Good idea though overall.
I thought it worked really well and even though you didn't get to polish I think the squid's eye following the mouse was a really nice touch! Which I would call polish :)
Neat game mechanic!