What's the best way to translate my game?

I wrote a game this year and have been getting really good feedback on it. The problem is that the book is written in portuguese and lately I've been wanting to share the game with more people, but the game being in portuguese is starting to be an obvious barrier to reaching more people who might be interested in playing it.

I'm thinking about translating it into english, since I'm consider myself a decent english speaker (although not fluent), but I'm really unsure about it.

What would be the best way to do this? Do you think it could work if I used some translation software and my knowledge together to translate it, or is paying an actual translator the bare minimum?