This would of gone so hard in the 90's.
Great game!
My time is 10:38, from memory.
Love the vibe, music and graphics.
Gameplay is good, I don't really play survivor-type games,
(I do play all kinds of Shoot-em-ups, though.) but I had fun!
The controls took a bit of getting used to.
I do have some suggestions:
1. Elevation changes in the arena.
Either over-time, or at the very start. Could be randomized each playthrough.
2. Add the text 'HP: or 'POWER' next to the health numerical value
(I got confused at what the number meant until around half-way through my playthrough)
3. Add in a score bar
4. Larger variety of enemies/enemy behaviours
5. Add in a 'Points/Time until next upgrade:' bar,
so players can predict when the next upgrade will happen.
6. Toggleable crosshair options.
7. I know that there is a map on the top right, but being able to see behind you in-game would be nice.
Otherwise; great game!
Would love to see a full release of this.