I just found out about Stalker0's Obsidian SC System, thanks to that, this problem became a no brainer. Actually, I added 2 unplaned skill challenges
This is what I did:
Room 0-6 Font of Bones
Hallow the Font of Bones
3 round time limit
Mental (Religion) Level 3 (450xp) (DC 20, Fail <6, Succ >7)
Fail - Restart, Partial - deactivate for 5 min, Succ - destroyed
Summons 6 Font of Bone Skeletons per round, as long as living creatures are present, or it is destroyed.
Font of Bones Skeleton
Level 3 Minion
Medium natural animate (undead)
XP 25
Initiative +3
Senses Perception +2; darkvision
HP 1; a missed attack never damages a minion.
AC 18; Fortitude 15, Reflex 16, Will 15
Immune disease, poison
Speed 6
m Claws (standard; at-will) ✦ Weapon
+8 vs. AC; 5 damage.
Alignment Unaligned
Languages —
Str 15 (+2)
Dex 17 (+3)
Wis 14 (+2)
Con 13 (+1)
Int 3 (–4)
Cha 3 (–4)
Equipment heavy shield, longsword, shortbow, quiver of 10 arrows
Room 0-8b
Kruthik Tunnels
Physical Level 2, 125xp, (DC19, Fail <6, Succ >7)
Acrobatics, Nature
Fail - Kruthik Encounter with -2 to attacks (fight in the tunnels)
Partial - Kruthik Encounter (In a cave with some head room)
Succ - no encounter, find some treasure (200gp)
Room 0-9A - Symbol of Bane
Physical Level 6 (250xp)
Endurance (DC21, Fail <6, Succ >7)
Miss = unable to approach the symbol, -2 Surges, Partial = -2 Surges, succ = meet the guardian (Bearded Devil)
Room 1-12
Bronze Door (Level 6) (750xp)
DC 21, 8 Successes needed, 5 Locks (Thievery), Warding Magic (Arcana, once per round), DC 21, Guardian
once the door is touched, 2 Angel of Valor Level 6 are summoned. The Divine protection of the door is down for 3 rounds, the locks can be picked. After those 3 Rounds, the Angels vanish, the door is warded again.
Diving through the stream (Level 8) (350xp)
Physical Level 8, Athletics, Endurance (DC 23, Fail <6, Succ >7)
Miss = no comming through, -2 Surges, Partial = -2 Surges