To be clear, I mean a list of items that need to be completed by season 4 end. And of course I did a google search right after I started typing to ASK for this and found a pretty good list right away.

https://gamerant.com/destiny-2-triumph-season-4-end/

Links to light.gg to see if you have done them.

https://www.reddit.com/r/DestinyTheGame/comments/9x2e64/list_of_triumphs_only_available_during_season_4/

- No text -

Links to light.gg to see if you have done them.

https://www.reddit.com/r/DestinyTheGame/comments/9x2e64/list_of_triumphs_only_available_during_season_4/

Looks like there are two I won't be able to finish:

Vanguard // Strikes // Nightfall // Season 4: Nightfall
Crucible // Lifetime // Glory Ranks // Season 4: Legendary Victory

I'm okay with that. :)