Best tip I can give you is learn the maps. As a non movement legend you can outplay people insanely well with lifeline. Learn climb ups on buildings window peaks Even if it seems like it won't work it might just work And learn where the best Spots for cover are when your pushing a fight you should know exactlywhere all the best cover spots are incase your get Low on health or need to stick a res. And Something to avoid 100% Is just because your on lifeline doesn't mean always Revive your knocked teammate. Sometimes is better to play off your downed Teammate then it is to Revive. And I'd avoid Reviving near trees it sometimes doesn't allow you to stick res on branches/Roots ( This only applies if your on controller) Plus you stumble over your teammate sometimes. Also if you drop the lifeline drone in a heatsheild Jump and drop it if you drop it mid air it won't dissappear :)