Farm lv40 at the gate with x3 modifier + result booster.
If you were diligent in defeating standard duelists using 3x modifier once every 4 hours every day, at the end of each day you should have enough fossils to duel lv40 at the gate using 3x modifier twice. That's how people quickly finished the event. Farming lv40 using 3x modifier + result booster gives you 500k points each duel.
I'm not sure if you can get many fossils at this point, so close to the event ending, but I guess you can remember that for the next Tyranno event. (This is the first unlock event, so it will be repeated again at least once in the future.)
The above also applies to any unlock event in similar fashion, for example the recent Jack Atlas' unlock event.
Lvl 80 already appeared for me, and I have 8.5 million points. Since I login twice daily, my only issue is that whenever I play and spend roungly 240 fossils (2 tries at the gate), Ultimate Tyranno seldom appears. Now I cleared all SDs, did a lvl40 farm, and no Ultimate Tyranno. I don't know if there's still lvl 90 before lvl 100 but because of this, I won't finish the event. Hmmpf
That is weird, because if you have fulfilled the point requirement listed on the event bar at the bottom left of the screen, Ultimate Tyranno should appear.
progressively increases on level (and HP). Can drop your second or third Stego, depends.
The second one is the problem for me. After I finish lvl 40 normal Tyranno, I don't if it's RNG, but it's always a miss. The 2nd Tyranno never appears, or sometimes, needs a lot of time and afk for it to appear. I believe these two Tyrannos can't exist simultaneously in GX world. So why 2nd rarely appears?
Nevermind.. Reached 9mil athen lvl90 tyranno appeared. I guess lvl 100 needs 10mil points. I can do it, I have lots of duel orbs. :) Thanks for the reply!