Thx for the feedback. I'm planning on adding new flesh types, some hazardous and others you can unlock in the upgrade tree. Regarding the resource management, it's something I'm still trying to figure out in order to improve that part but I agree that it's only impactful in the beginning for now. Thx again for taking the time to play and give your feedback :)
No problem! I do actually have an idea that just popped into my head.
If you know the game Random Access Mayhem, one of the playable characters uses a flamethrower, and if you use it too long you start to overheat and eventually go kaboom.
Perhaps something like that could work? Holding down the flamethrower for too long causing heat to build up in your suit, making you rapidly burn oxygen till you cool down again? (Probably no need to include the kaboom part tho :p)
Gives an extra avenue for upgrades, based on both managing and maybe even using the heat buildup. But that's just my own personal idea.