Personally, likely not. As my usual games are mainly survival games, like Subnautica, Ark Survival, The Forest or MMOs like FFXIV Online, so I’m likely not your target audience.
But, I do say that the gameplay is something that players would pay for, it currently is quite simple, but has many ways to expand on like you mentioned a perk tree, campaign more, more enemy types etc. If you are able to put out something interesting that can be played for 10-15 hours, your main concern should be marketing and letting your game be known. Be it reducing the price, so more players get to try it, or releasing a demo of the first few levels, the main priority should be getting your game’s name out there, unless you’re creating something so unique and amazing that players will advertise it themselves.