Personally, i think progression based abilities being tied to a mana bar is not a great idea, because i have gotten stuck having to backtrack to respawn enemies so i could use the toasted multiple times.
I would highly recommend the mana bar to recharge slowly with time.
Also, being only able to move with the d-pad instead of the stick is an evil choice deserving of punishment.
PD: Honestly i was going to give a longer review, but as i shown you on discord, i got completely stuck because of my inability to use the abilities if there is no enemies to recharge the mana, so i could not finish the game, a shame honestly, i kinda liked the vibe.