Thank you for the very positive feedback; we are very glad that you liked the game!
Healing whilst moving /dashing was supposed to be hard; we wanted the player to take a "times out" to heal; the mechanic was also implemented very late into the Jam as well ;)
There are 3 upgrades:
-Shot (with left mouse to activate) - dropped by the enemy virus (spiked)
-Dash (a more powerful dash that allows the player to also dash through multiple enemies at once; replaces normal dash) - Dropped by the dashing enemy
-Squeeze (to reach the "tight" areas) - Dropped by the worm enemy
We had such a blast making this game!