Approximating CR

Creatures by CR

Tenebrae PCs are essentially APL+2 due to a higher point buy.

Creatures by CR
CR	Hit Points	Armor Class	High Attack	Low Attack	Average Damage		Primary Ability DC	Secondary Ability DC	Good Save	Poor Save
					High	Low
1/2	10	11	1	0	4	3	11	8	3	0
1	15	12	2	1	7	5	12	9	4	1
2	20	14	4	3	10	7	13	9	5	1
3	30	15	6	4	13	9	14	10	6	2
4	40	17	8	6	16	12	15	10	7	3
5	55	18	10	7	20	15	15	11	8	4
6	70	19	12	8	25	18	16	11	9	5
7	85	20	13	10	30	22	17	12	10	6
8	100	21	15	11	35	26	18	12	11	7
9	115	23	17	12	40	30	18	13	12	8
10	130	24	18	13	45	33	19	13	13	9
11	145	25	19	14	50	37	20	14	14	10
12	160	27	21	15	55	41	21	15	15	11
13	180	28	22	16	60	45	21	15	16	12
14	200	29	23	17	65	48	22	16	17	12
15	220	30	24	18	70	52	23	16	18	13
16	240	31	26	19	80	60	24	17	19	14
17	270	32	27	20	90	67	24	18	20	15
18	300	33	28	21	100	75	25	18	20	16
19	330	34	29	22	110	82	26	19	21	16
20	370	36	30	23	120	90	27	20	22	17
21	400	37	31	24	130	98	27	20	23	18
22	440	39	32	25	140	105	28	21	23	18
23	480	40	33	26	150	113	29	22	24	19
24	520	42	35	27	165	124	30	23	25	20
25	560	43	36	28	180	135	30	24	26	21
26	600	44	37	29	195	145	31	25	27	22
27	640	45	38	30	210	155	32	26	28	23
28	680	46	39	31	225	165	33	27	29	24
29	720	47	40	32	240	175	34	28	30	25
30	760	48	41	33	255	185	35	29	31	26

Hazards by CR

Tenebrae PCs are essentially APL+2 due to a higher point buy. Also, traps are more fun and interesting when they involve a series of events, and involve more than one PC such as with Skill Combat.

Traps/Hazards/Skill Challenges by CR
Desired CR	Low Saving Throw DC	High Saving Throw DC	Low Attack Bonus	High Attack Bonus	Low Dmg	Medium Dmg	High Dmg
1	9	12	1	2	1d6+2	1d6+2	2d6
2	9	13	3	4	2d6+1	2d6+2	3d6
3	10	14	4	6	3d6	3d6	3d6+2
4	10	15	6	8	3d6+2	4d6	4d6+2
5	11	15	7	10	4d6+1	5d6	5d6+2
6	11	16	9	12	5d6+2	6d6	7d6
7	12	17	9	13	6d6+2	7d6+2	8d6+2
8	12	18	11	15	7d6+2	8d6+2	10d6
9	13	18	12	17	8d6+2	9d6+2	11d6+2
10	13	19	13	18	9d6+2	11d6	13d6
11	14	20	14	19	11d6	12d6+1	14d6+1
12	15	21	15	21	11d6+2	13d6+2	15d6+2
13	15	21	16	22	13d6	14d6+2	17d6
14	16	22	17	23	14d6	15d6+2	18d6+2
15	16	23	18	24	15d6	17d6	20d6
16	17	24	19	26	17d6	19d6+2	23d6
17	18	24	20	27	19d6+2	22d6	25d6+2
18	18	25	21	28	21d6+2	24d6+1	28d6+2
19	19	26	21	29	23d6+2	27d6	31d6+2
20	20	27	22	30	25d6+2	29d6	34d6+1

Skill Challenges by CR

Tenebrae PCs are essentially APL+2 due to a higher point buy. Also, traps are more fun and interesting when they involve a series of events, and involve more than one PC such as with Skill Combat.

Skill Challenge DCs
Desired CR	Ability Check/Very Easy	Easy	Medium	Moderate	Hard	Heroic
1	10	12	16	16	20	30
2	11	13	16	17	21	31
3	11	13	17	18	22	32
4	11	13	17	19	23	33
5	11	14	18	20	24	34
6	12	14	18	21	25	35
7	12	14	19	22	26	36
8	12	15	19	23	27	37
9	12	15	20	24	28	38
10	13	15	20	25	29	39
11	13	16	21	26	30	40
12	13	16	21	27	31	41
13	13	16	22	28	32	42
14	14	17	22	29	33	43
15	14	17	23	30	34	44
16	14	17	23	31	35	45
17	14	18	24	32	36	46
18	15	18	24	33	37	47
19	15	18	25	34	38	48
20	15	19	25	35	39	49