hi, can someone link me to how the sentinels unlock please. i know dead ends in underspire but thats all i know. thank you
If you find and battle a “soldier” card - green/rare in the picture - your reward could be a torch or something less useful …or maybe a SENTINEL !
The rarity of the “soldier” does not define the value of the reward.
thank you, i made the post when i was half asleep and should have specified, during the battle you have shown, does the sentinel need to appear in the battle for a chance to get the troop?
Hmm…I think all the battles feature a sentinel but you will not necessarily get one as a reward, and if you do get lucky it may not be the one featured in the fight !
I have completed every Underspire since October 2023 and have 4 original Sentinels and 2 duplicates. They are extremely rare !
I’ve completed everything as well and still got none. Talking about rare. 
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Community theory is that the sentinels drop about 3% of the time, but which one you get is decided randomly (not unlike crafting those Dragonite Eggs).
I have had 2 of the same sentinel. Ridiculous, stupid addition to the game, don’t hold your breath for the devs to fix it though we are all having so much “fun” with the rng elements
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Devs next year: we had so much fun with the sentinels we are adding 6 more
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Since many of us still have 0 Sentinels despite pumping 1500 gems into Underspire each and every week, is there another way incoming to get them?
Either with money or in the Soulforge for example. 
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These are currently only planned to be exclusive to the Underspire.
We’ve passed on feedback about the drop rate.
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Expect the feedback to get totally ignored because it doesn’t affect lining the devs pockets
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We, as a community, have determined that the drop rate of sentinels is about 1.5% with thousands of data points based on Nerdie Birdie’s wonderful pie charts.
Clearly, this is evil by design and was done intentionally to make sure that we will be trying to get all the sentinel troops for YEARS.
A more realistic drop chance of 10% might be adequate, but if the devs get back to us and wait for a response on this issue, I’ll leave it up to our dedicated community to decide.
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this is why i dont play underspire … there is really no point.
I wish the drop rate was about 1.5%. For me it’s still 0%, despite soon reaching 6 figures in gems spent …
You can look up “treasure guardian community drop rates” for continued evidence of the frustrations that people are experiencing, but this needs to stop and you guys need to help us.
Please bring this to the devs attention, @Kafka