Field J4 (Gemcraft Chapter 2)

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Field J4 on Looming
Field Type	Tome Chamber
Unlocked by	J1
Unlocks	V18
Tome Chamber	Amplifiers
Available gem types
Rain/Snow %	0/0
Waves	Reavers: 20 Giants: 8 Swarmlings: 14 Total: 42
HP	64 * 1.087/wave after first
Armor	36 + 4.18/wave after fourth
Buffs	+80%/wave after wave 5

Field J4 is obtained by completing Field J1 in Gemcraft Chapter 2 on Looming difficulty. To open the tome chamber on this field, you must kill 216 cursed monsters within a range of 7. The guaranteed gem types available for this field include Mana Leeching and Critical Hit. There are 42 waves on this field and one achievement exclusive to it.

Starting Out

Player Buildings	Other Buildings
Amplifier ×3	Shrine of Time (Charge: 200s) Shrine of Energy (Charge: 200s) Haste Beacon (HP: 3,000; Armor: 30; Range: 7) ×2

Waves

The following table applies only to Looming difficulty with no battle traits.

Wave	Monsters	HP	HP Regen	Armor	Speed	Mana Gain	Banishment Cost	XP	Buffs
1	10 Reavers	64	59	36	0.87 / 1.57	24	48	4
2	12 Reavers	70	61	36	0.87 / 1.57	25	50	4
3	19 Reavers	76	63	36	0.87 / 1.57	27	53	4
4	11 Reavers	82	65	36	0.87 / 1.57	28	56	4 / 5
5	14 Reavers	89	67	41	0.87 / 1.57	29	59	5
6	4 Giants	3,030	70	63	0.22 / 0.4	95	189	6
7	37 Swarmlings	20	73	26	1 / 1.8	8	16	3
8	15 Reavers	115	75	48	0.87 / 1.57	34	69	5
9	4 Giants	3,905	78	75	0.22 / 0.4	107	214	7
10	9 Reavers	136	81	57	0.87 / 1.57	37	74	5
11	14 Reavers	147	83	65	0.87 / 1.57	39	78	5
12	50 Swarmlings	30	87	42	1 / 1.8	10	20	4
13	44 Swarmlings	33	90	47	1 / 1.8	11	21	4
14	15 Reavers	189	93	69	0.87 / 1.57	43	87	6
15	32 Swarmlings	39	97	46	1 / 1.8	11	22	4
16	54 Swarmlings	42	100	59	1 / 1.8	12	23	4
17	9 Reavers	243	104	94	0.87 / 1.57	48	97	6
18	48 Swarmlings	49	108	52	1 / 1.8	12	25	4
19	54 Swarmlings	54	112	55	1 / 1.8	13	26	4
Spark: Unearthed Shard
20	56 Swarmlings	58	116	64	1 / 1.8	13	26	4 / 5
21	14 Reavers	339	120	89	0.87 / 1.57	55	109	6
22	14 Reavers	369	125	87	0.87 / 1.57	56	112	6 / 7
23	3 Giants	16,702	130	165	0.22 / 0.4	172	344	9
24	54 Swarmlings	82	135	56	1 / 1.8	15	29	5
25	3 Giants	19,743	140	188	0.22 / 0.4	181	361	9 / 10
26	10 Reavers	515	145	147	0.87 / 1.57	62	123	7
27	4 Giants	17,494	151	169	0.22 / 0.4	191	382	9 / 10
28	11 Marked Reavers	609	157	155	0.87 / 1.57	65	130	8	Burns 4.6% of total mana when banished
29	8 Reavers	662	163	168	0.87 / 1.57	67	133	8
30	57 Marked Swarmlings	134	169	119	1 / 1.8	17	34	5	+32 extra armor
31	25 Swarmlings	146	175	102	1 / 1.8	17	35	5
32	7 Reavers	850	182	189	0.87 / 1.57	71	143	8
33	39 Swarmlings	173	189	87	1 / 1.8	18	36	5
Spark: Touch of Wisdom
34	7 Reavers	1,004	197	203	0.87 / 1.57	74	148	8 / 9
35	32 Marked Swarmlings	204	204	76	1.85 / 3.33	19	38	5	×1.85 speed
Spark: Prism Cascade
36	51 Swarmlings	222	212	108	1 / 1.8	19	39	6
37	16 Reavers	1,290	220	164	0.87 / 1.57	79	158	8
38	4 Giants	43,797	229	224	0.22 / 0.4	242	483	11
39	18 Reavers	1,524	238	155	0.87 / 1.57	82	164	8 / 9
40	4 Giants	51,731	247	297	0.22 / 0.4	250	500	12
41	3 Twisted Giants	74,973	257	225	0.42 / 0.75	254	508	11 / 12	×1.88 speed Drops 3 spawnlings when killed, having 6,003 hit points each
42	7 Reavers	1,957	267	229	0.87 / 1.57	87	174	9

Achievements

Achievements exclusive to Field J4 include:

• Don't use any gem enhancement spells.

Completion

The player receives the following drops upon completing this field:

• Field V18

In addition, if the player opens the tome chamber, they will get the following drops:

• The Amplifiers skill tome