The room is just too small to avoid hit randomly spawned obstacles - Unfortunately did not survive 1 minute longer in any match. I would change the shield pointing in mouse pointing direction, or being activated with RMB holding. Dashing is too dangerous to use at any point of game since objects can appear or change positions very fast. Bullets could move slower, and at the same time player should not touching anything, even own bullets. Also thought the melee weapon is useless but maybe it could be throwed and picked up after each throw from the ground (and bouncing off from the enemies when hit).
There are things to try like weapons and characters, and also creatures and other traps and hazards to find out, so game has variety and something interesting coming up from after each corner. Also cursor changing and other setting options are nice additional features. Also graphics, especially characters looking simple but pretty good.