https://spacejunkiesgame.com/grab-your-jetpack-its-time-to-duel/

Facing off with your friends is so easy, a robot could do it. Just open up a lobby with your rival and start a game to begin the duel. Choose your weapons carefully- you won’t be able to change your equipment unless you fall in battle. If your current setup isn’t working for you, dust off some of the other weapons in your arsenal before you respawn.

Earn points for each kill during the fight- take out the other player 15 times for an overwhelming victory. If you want to taunt your friend until the very end, you can also win by finishing the match with more points than your opponent. The timer runs out after five minutes, so plan your strategy accordingly. Duels can be staged on any map, although each area has a different selection of weapons and buffs at your disposal.

Get out there and prove yourself as the most dangerous duelist in the galaxy!