Solid start!
A few notes from another game dev:
- Over the top use of shiny lighting effects
- Awkward jump/dash ui
- Enemies a bit too fast for your first encounter
- Explosion effect needs a bit more 'punch'
- Doors should open a bit slower
- Got stuck in an enless fall loop in the lava tower
- Don't know if there's a way to get more ammo
Don't mean to be cynical - i really enjoyed the game just giving you some advice :)