Uploaded December 2023 | Updated September 2026, 2 weeks ago

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Requirement: Clear Floor 40 of Heavenly Tower to unlock Infernal Tower
First Appearance in EN: 1st January 2024 at 11:00AM

I'm being honest with you guys, I don't like any level design of these stages. They are pretty much the same in strategy and gameplay, only add some peons. Some of them is even easier than Heavenly Tower. It'll be a lot interesting if Ponos change Advent Boss entirely and replace it with their variant.
At least, Uril TF is really OP and currently in the meta rn. I might make a review out of it later.

Timestamps
0:00 Floor 41
Pretty much the same but they add 2 Ackey and some peons. You can easily kill Ackey with Supercar if you time it perfectly.

1:55 Floor 42
Ponos somehow make the stage easier than Heavenly Tower. We'll know that Zyclone is the most dangerous one, but they remove it (& Divine Cyclone) and replace it with Aku Cyclone & Primeval Cyclone. Primeval spawns pretty late (100s late than the others) so you have a bunch of time to prepare for it.

3:33 Floor 43
Yet again Ponos make the stage easier somehow. They remove UltraBaaBaa entirely which make the stage become no threat at all. Also, they add relic enemy including Othom & M.Ost. The stage only has 2 Dread Bore now which is piss easy.

5:09 Floor 44
The stage is wider and has more Aku Enemy. It's a lot tougher than Heavenly Tower but still manageable if you can kill peons fast enough. This might be out of the toughest floor in IT if you ask me.

7:28 Floor 45
They remove Duche and Dagshund and replace it with Wicked Tank and Oldhorn (+some Sir Rel). The strategy and difficulty are still the same except for Sir Rel.

9:13 Floor 46
They replace 3 Shy Boy with 2 Gokurakku (& Loris) who make the stage a lot harder. Gokurakku is one of the toughest peons to stall so be prepared for it.

11:31 Floor 47
I don't know about this but I feels like it easier than Heavenly Tower. Brollow turns into Miz Devil which make it easier. Owlbrow to Condemned Peng which is a bit tougher but still manageable, and 4 Tackeys to 2 Ackeys which is a lot easier to kill by timing Supercar. No Brollow and Tackey impact the stage difficulty a lot.

14:11 Floor 48
They remove a bunch of metal peons and replace it with Aku enemies. I feel like this is easier than Heavenly Tower because less metal means less RNG and easier to kill. Each version is pretty hard to stall anyway so it doesn't matter.

15:57 Floor 49
As what we expected but they add some Aku Gory as peons and delay Hermit spawn by 53 seconds. I don't think this stage should delay Hermit spawn because it's already easier than (or equivalent to) Heavenly Tower since they're Relic trait now and we have a bunch of counters to use against them.

19:35 Floor 50
It's the same as Uril but has 100 more range and piercing range. More Surge Lv and 50% slow for somewhat reason. If you use Slapsticks in Heavenly Tower, use it here make it a lot easier since Uril here is relic. Peons here are troublesome but I think Slapsticks is enough to handle all of them.

23:45 Reward
25:04 Outro

Song List
Terraria Calamity Mod - Fly of Beelzebub
Monster Hunter 3rd Portable - Gathering Hall Theme