I do not see the problem.
Your Deathmatch mode is point based and not last man standing, is it not? So you already have a rule system for giving out points without telling people on the loading screen that it is not last man standing. Or telling them the point rules.
And why would you need to create more mechanics? Or specifically tell them in the loading screen? Rolling over a bonus point to get a bonus point is not hard to grasp.
Do whatever game modes you think are fun to play in your game. If a host player opens the game, this is all idle thinking anyway. The host makes the decision which modifiers to the rules/mechnics are in place.
And if it is not a host that opens the game and you have some kind of lobby or matchmaking, restricting to few game modes is better, so players do not spread out and each plays a game mode alone, not finding other players.
During the main development of T.A.N.K., I was testing the multiplayer mode on two family computers. But recently, there was a big internet outage in my city. After that, when I tried to join a lobby in my game on another computer, I couldn't. I'm not sure if the outage is the cause of the problem. That's why I need help testing the multiplayer mode.
There are a few important things you should know if you want to help:
1. You don't have to test the game on one computer. Everything works on one computer, even mine. Also, the game has a player check that won't let you join a lobby you're already in if you're on the same computer.
2. I added some extra information to the lobby search menu. Namely, the top left corner will display the number of all found lobbies, even those lobbies that don't show up in the lobby list.
3. Write here about your results and problems.
4. To download the game, click - T.A.N.K. You will see an outdated page of an earlier version of T.A.N.K. There are 2 files - Tank workshop (Alpha) and T.A.N.K debug, you need to download T.A.N.K debug.
I will be grateful for help.