Two notes for if you want to make a patch. You can get stun locked between 2 enemies mainly on the 2nd stage of level 2 if you dash and land in the middle o f them leading to a soft lock and restart needed. Also you can get stun locked by the final boss on the side of the screen if you aren't careful which can kind of be annoying.
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Ah thank you, I have updated with a fix for the soft locks (Slight time immunity after collisions), this should fix the soft lock scenario and also protect the player from consecutive hits, such as the boss stun lock!
As for the final boss, there is only one, so luckily don't have to worry about an alternative boss mechanic, thank you for pointing these out!