Thanks for trying out Steampunk Lincoln! And thank you also for the feedback, as it was both helpful and constructive, and exactly what I was looking for by by posting my Early Dev build on this site :)
I'll definitely take a second look at the Stamina and Flamethrower damage as part of my next update, which will also add into the game a basic Skill Tree and Leveling System. I'll also be adjusting enemy attack damage, along with the player's starting health and stamina. An Inventory System is also in the plans for a future update, along with the ability to restock Medkits / Healing Flasks that you come across in the environment.
Thanks again!