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Strategy Summary and general tips
I'm working towards a goal of what cards I want to have in certain rooms.
These are (the last green room on the hardest path in the Threshold):
Room 2-2-1: at least three 3*+ cards with 6 levels on them
Room 3-1-0: at least two 4*+ cards with 6 levels on them
Just before the boss: a 5/5* card additional to the two 4/4* cards, all of them on maximal levels
It's not perfectly easy to obtain these cards at that point in the run. There are many times you'll end up with no 5* cards at all. It's better to use three 4* cards or even just two 4* cards and a 3* card instead of forcing to get this 5* card. Taking a booster can also help if you're just before the boss and won't have the time to level a new card anyway.
These calculations are about winning in the final room, but don't forget you'll have to get there first! If you lose on the way due to trying to build the "perfect team" you'll "lose" more fragments than if you were just going with a semi-perfect team.
General tips:
Take the hardest path. The rooms sound like they are slightly more difficult but usually it's possible to get the 100% for better rewards, which makes progressing easier (details on rewards on the next text box).
Several times it's the option to take a better horse early on.
(earliest: 4* horse in room 1-2-5, 5* horse in room 2-2-2) This helps you to be able to level them soon enough to be ready for threshold 3 and the final boss.
Avoid boosters. Even a 2* horse can help up to 4 times. Often you might only be missing 1 or 2 in one skill, or 1 in different skills, if you're only using up to two good horses. Instead of using energy on a third good horse, you could use a 2* horse instead. There are runs, where it's not that important. But there are also runs, where you're constantly low on energy. Having saved 1 or 2 points of energy can make a huge difference.
Go for 100%. Don't risk to lose by going with 95% (for example) just to save some energy (if it's not necessary). A chance of 95% of winning says, that in 1 of 20 trys, you'll lose instead. If you lose, having saved that energy won't help you. If you win by using the energy, you might find some more energy (and may even get some fragments in the room you just won).
I'm working towards a goal of what cards I want to have in certain rooms.
These are (the last green room on the hardest path in the Threshold):
Room 2-2-1: at least three 3*+ cards with 6 levels on them
Room 3-1-0: at least two 4*+ cards with 6 levels on them
Just before the boss: a 5/5* card additional to the two 4/4* cards, all of them on maximal levels
It's not perfectly easy to obtain these cards at that point in the run. There are many times you'll end up with no 5* cards at all. It's better to use three 4* cards or even just two 4* cards and a 3* card instead of forcing to get this 5* card. Taking a booster can also help if you're just before the boss and won't have the time to level a new card anyway.
These calculations are about winning in the final room, but don't forget you'll have to get there first! If you lose on the way due to trying to build the "perfect team" you'll "lose" more fragments than if you were just going with a semi-perfect team.
General tips:
Take the hardest path. The rooms sound like they are slightly more difficult but usually it's possible to get the 100% for better rewards, which makes progressing easier (details on rewards on the next text box).
Several times it's the option to take a better horse early on.
(earliest: 4* horse in room 1-2-5, 5* horse in room 2-2-2) This helps you to be able to level them soon enough to be ready for threshold 3 and the final boss.
Avoid boosters. Even a 2* horse can help up to 4 times. Often you might only be missing 1 or 2 in one skill, or 1 in different skills, if you're only using up to two good horses. Instead of using energy on a third good horse, you could use a 2* horse instead. There are runs, where it's not that important. But there are also runs, where you're constantly low on energy. Having saved 1 or 2 points of energy can make a huge difference.
Go for 100%. Don't risk to lose by going with 95% (for example) just to save some energy (if it's not necessary). A chance of 95% of winning says, that in 1 of 20 trys, you'll lose instead. If you lose, having saved that energy won't help you. If you win by using the energy, you might find some more energy (and may even get some fragments in the room you just won).
Facts (numbers, calculations and rewards I've seen)
Requirements on the hardest and fragment paths:
Threshold 1:
1-1-0 (green): 1x 1
1-1-1 (green): 1x 2
1-2-2 (orange): 2x 3
1-1-3 (orange): 2x 3
1-2-4 (orange): 2x 4
1-2-5 (red): 3x 6
1-1-6 (red): 3x 7
Threshold 2:
2-1-0 (green): 1x 5
2-2-1 (green): 1x 6
2-2-2 (red): 3x 8
2-1-3 (red): 3x 9
2-2-4 (orange): 2x 9
2-2-5 (red): 3x 10
2-1-6 (red): 3x 11
Threshold 3:
3-1-0 (green) 1x 9
3-2-1 (red): 3x 11
3-1-2 (red): 3x 12
3-1-3 (orange): 2x 12 (the only difference between the middle and the right path)
3-2-3 (red): 3x 13
3-[1/2]-4 (red): 3x 13
3-[1/2] 5 (red): 3x 14
3-1-6 (red): 3x 15
Boss: 4x 18
Sum of starting skills and with max lv-ups:
2*: 5 + 4 = 9
3*: 7 + 8 = 15
4*: 9 + 12 = 21
5*: 11 + 16 = 27
Skills needed to defeat the boss:
18+18+18+18 = 72
(to get 100% you'd need 2 5* cards and 1 4* card, all maxxed)
Rewards I've seen: (from most occurance to very rare)
Threshold 1:
Green rooms:
Booster +6, 2* horses, 1 level for 1 horse, 2 energy
Orange rooms:
3* horses, 1 level for 1 horse, 2 energy, 2* horses, booster (+8, +6, +4)
Red rooms:
3* horses, 1 level for 1 horse, booster +8, 1 level for 2 horses, 4 energy, 2 energy, 4* horses, booster +4
Threshold 2:
Green rooms:
3* horses, 1 level for 2 horses, booster +8, 4 energy, 2 energy, booster +6
Orange rooms:
4* horses, 1 level for 2 horses, 4 energy, booster +8, booster +6
Red rooms:
4* horses, 2 level (any), 4 energy, booster +10, 6 energy, 5* horses, booster +6
Threshold 3:
Green room:
4* horse, 2 level, 4 energy, booster +10, 6 energy, booster +8
Orange rooms:
booster +10, 4* horse, 2 level, 6 energy, 5* horse, 4 energy, booster +8
Red rooms:
booster +10, 5* horse, 2 level, 6 energy, booster +8
Requirements on the hardest and fragment paths:
Threshold 1:
1-1-0 (green): 1x 1
1-1-1 (green): 1x 2
1-2-2 (orange): 2x 3
1-1-3 (orange): 2x 3
1-2-4 (orange): 2x 4
1-2-5 (red): 3x 6
1-1-6 (red): 3x 7
Threshold 2:
2-1-0 (green): 1x 5
2-2-1 (green): 1x 6
2-2-2 (red): 3x 8
2-1-3 (red): 3x 9
2-2-4 (orange): 2x 9
2-2-5 (red): 3x 10
2-1-6 (red): 3x 11
Threshold 3:
3-1-0 (green) 1x 9
3-2-1 (red): 3x 11
3-1-2 (red): 3x 12
3-1-3 (orange): 2x 12 (the only difference between the middle and the right path)
3-2-3 (red): 3x 13
3-[1/2]-4 (red): 3x 13
3-[1/2] 5 (red): 3x 14
3-1-6 (red): 3x 15
Boss: 4x 18
Sum of starting skills and with max lv-ups:
2*: 5 + 4 = 9
3*: 7 + 8 = 15
4*: 9 + 12 = 21
5*: 11 + 16 = 27
Skills needed to defeat the boss:
18+18+18+18 = 72
(to get 100% you'd need 2 5* cards and 1 4* card, all maxxed)
Rewards I've seen: (from most occurance to very rare)
Threshold 1:
Green rooms:
Booster +6, 2* horses, 1 level for 1 horse, 2 energy
Orange rooms:
3* horses, 1 level for 1 horse, 2 energy, 2* horses, booster (+8, +6, +4)
Red rooms:
3* horses, 1 level for 1 horse, booster +8, 1 level for 2 horses, 4 energy, 2 energy, 4* horses, booster +4
Threshold 2:
Green rooms:
3* horses, 1 level for 2 horses, booster +8, 4 energy, 2 energy, booster +6
Orange rooms:
4* horses, 1 level for 2 horses, 4 energy, booster +8, booster +6
Red rooms:
4* horses, 2 level (any), 4 energy, booster +10, 6 energy, 5* horses, booster +6
Threshold 3:
Green room:
4* horse, 2 level, 4 energy, booster +10, 6 energy, booster +8
Orange rooms:
booster +10, 4* horse, 2 level, 6 energy, 5* horse, 4 energy, booster +8
Red rooms:
booster +10, 5* horse, 2 level, 6 energy, booster +8
A little more detailed
Note: I try to avoid taking boosters. They "have" one energy while even a 2* horse can help at least twice, usually. There are situations where a booster is quite helpful. But usually it's safer (at least it was for me) to use the horse cards.
During Threshold 1 I focus on building a decent team of three 3*+ cards.
We start with a team of 3*/2*/2* (at least).
In the beginning I focus on:
* taking new cards if they provide more in a weakness of my team than the levels that I find. (If my team has 0 1 and 0 in red I will even take a 2* horse with 2 in red instead of 1 level)
* taking new 3*+ cards (if I don't have 3 already or don't need any of the other provided options)
* leveling cards (highest cards first)
Note: I suggest using up to three 2* cards instead of one 3* card most of the time (unless they are leveled and/or I'm low on cards) as they will be useful up to room 2-2-1, but usually not that much after that room. We can just use their energy.
Threshold 2:
Here the main objective is to get two 4* cards (or higher) which complement each other (not two cards starting with 4 in red). I'd like them to have gained at least 4 levels when I'm leaving the first room of Threshold 3.
The leveled 3* cards can carry us up to 11/11/11 (last room of threshold 2, and second in threshold 3). After that we need to have higher cards.
While going for 4* cards we need to have an eye on our energy though. Sometimes focusing on energy will be more important than taking the levels, if we wouldn't get 100% in the next room otherwise.
Threshold 3:
If we are okay on energy and fine on levels (only 1 more time to pick levels to maximize the two 4* horses), we can take a 5* horse. We may take it as well if our team is lacking some particular skill which the 5* horse can help with, or if the other options are even less helpful (levels only for exhausted horses, booster, ...).
There are runs where we had to take a third 4* card in room 3-1-0. If this is the case and we are lacking some levels anyway, between 2 levels and a 5* card, I'd suggest taking the levels.
Keep in mind that you have to level the card for it to become useful. A 4* card without any levels is as strong as a leveled 2* card. A 5* card without any levels is as strong as a leveled 3* card.
Threshold three is very strict with what you need - if you take a 5* horse you will need at least 2 rooms to level it. Most likely you will also need some energy during that time => you need at least 3 rooms before the boss just to level this one card. If you still have to level some 4* cards as well, you will need to find some levels for them too. All of this takes "time" and "time" (rooms with loot) is very rare in the end.
So, if you're already low on levels but maybe had to take another 4* card I'd suggest just to level the 4* cards and to check if you can take a booster for the final room.
Note: I try to avoid taking boosters. They "have" one energy while even a 2* horse can help at least twice, usually. There are situations where a booster is quite helpful. But usually it's safer (at least it was for me) to use the horse cards.
During Threshold 1 I focus on building a decent team of three 3*+ cards.
We start with a team of 3*/2*/2* (at least).
In the beginning I focus on:
* taking new cards if they provide more in a weakness of my team than the levels that I find. (If my team has 0 1 and 0 in red I will even take a 2* horse with 2 in red instead of 1 level)
* taking new 3*+ cards (if I don't have 3 already or don't need any of the other provided options)
* leveling cards (highest cards first)
Note: I suggest using up to three 2* cards instead of one 3* card most of the time (unless they are leveled and/or I'm low on cards) as they will be useful up to room 2-2-1, but usually not that much after that room. We can just use their energy.
Threshold 2:
Here the main objective is to get two 4* cards (or higher) which complement each other (not two cards starting with 4 in red). I'd like them to have gained at least 4 levels when I'm leaving the first room of Threshold 3.
The leveled 3* cards can carry us up to 11/11/11 (last room of threshold 2, and second in threshold 3). After that we need to have higher cards.
While going for 4* cards we need to have an eye on our energy though. Sometimes focusing on energy will be more important than taking the levels, if we wouldn't get 100% in the next room otherwise.
Threshold 3:
If we are okay on energy and fine on levels (only 1 more time to pick levels to maximize the two 4* horses), we can take a 5* horse. We may take it as well if our team is lacking some particular skill which the 5* horse can help with, or if the other options are even less helpful (levels only for exhausted horses, booster, ...).
There are runs where we had to take a third 4* card in room 3-1-0. If this is the case and we are lacking some levels anyway, between 2 levels and a 5* card, I'd suggest taking the levels.
Keep in mind that you have to level the card for it to become useful. A 4* card without any levels is as strong as a leveled 2* card. A 5* card without any levels is as strong as a leveled 3* card.
Threshold three is very strict with what you need - if you take a 5* horse you will need at least 2 rooms to level it. Most likely you will also need some energy during that time => you need at least 3 rooms before the boss just to level this one card. If you still have to level some 4* cards as well, you will need to find some levels for them too. All of this takes "time" and "time" (rooms with loot) is very rare in the end.
So, if you're already low on levels but maybe had to take another 4* card I'd suggest just to level the 4* cards and to check if you can take a booster for the final room.