Takepoint.io is just as its name implies: take points! WIth your team, preferably, but you can definitely play this tactical shooter like Rambo if you'd like.
WASD or arrow keys move your character. Left click to shoot. Reload with R. Use your perk with space.
Teamwork is key in Takepoint.io. Work with your team to take points, and do take note, you'll capture them faster if more of your team is standing on them, and also, killing people is always better (and faster) with friends.