The behavior you describe engaging in is exactly why Bungie does not have chat in Destiny. So a team mate finds a spot to fight from and you deliberately attempt to make them die, thereby hindering your progress as well as theirs. By hiding and killing the enemy, that player is not hindering your progress. By attempting to push that player out of their spot so that they can die, you are deliberately hindering their progress. In this situation, it is you who is the bad guy. Bungie doesn't have chat because they are concerned about how squeakers, whiners, and jerks will ruin everyone's game. If players are trying to push other players out of their cover spots and get them killed, this is a sign to Bungie that with chat, there would be a lot of trash-talking going on. I understand where you are coming from, but what he is doing is not against the terms and conditions or EULA. What you are doing, is.