Very good, it feel like a retro arcade.
I think you could make the fire increase faster or add a item, that add some heat to the counter(not sure is there is one reach level 11).
Besides the green mushrooms are on proporuse i'm not sure i continue mistaken it for 1up of Super Mario Bros
I think i see the plung item but i don't reach to use, it could spawn morre frecuently if you increaese the frecuency of other hazard, it don't let us see the use of the limitation.