Nice loop the games got going, pixel art looks really good also.
Few things if you're looking for feedback:
The critical warning seems really inconsistent, like 1 time it was all shaking and "critical" when I still had 1/4 left, another time I'll have less and there won't be any warning.
Balance seems off. I brought a fuel upgrade almost instantly but refuelling costs so much I never got past 1 bar, felt like I screwed myself over massively for making 1 experimental purchase.
I died instantly and have no idea how. I went from full hp to 0, I didn't even look like I was caught in the explosion. When I respawned I wasn't really clear on how much progress I'd been set back.