Multiple New Game Modes

I would like to see multiple new game modes implemented.

1. Goblin waves (survival mode)

Have goblins come at you in waves, each being more than the last. Think of Call of Duty zombies.

2. Adventure

Share a link with friends or enter a queue and join other players to fight monsters and bosses. Move down the screen and unlock new lairs. Create paths with rocks, etc.

3. Sniper mode

Everyone has unlimited knives with 1 seconds cool down (maybe more or less) with only 3 hp. Whoever reaches 1,000 - 2,000 points first wins the match.

4. Free for all

Every player for them self.

5. New maps

While this is unrelated to game modes, it would be quite nice to have a change of scenery and have new maps.