I liked experimenting with the different parts given, but I feel like right now, the obvious better choice would be the overloaded machine gun. Since heat dissipates instantly, it's easy to keep cool by just waiting a little bit. Maybe you can add in the future a dissipation timer.
Still quite a fun game.
Godot Wild Jam #53 » Entries » Super cyber world under attack by a massive virus that wants to take over all bases!