Experience

When a hero reaches certain set values of experience he "levels up". At this point one of his four Primary Skills increases by one and he is offered a choice of one of two Secondary Skills.

The usual way to gain experience is through Combat. If a hero is victorius, at the end of combat, he'll receive 1 experience point for each Health of the creatures he's killed. Summoned Elementals and War Machines don't count. Resurrected creatures are only counted once, except Demons raised by Pit Lords. If there was an enemy hero present, the victor also gets 500 extra experience if the enemy hero didn't Retreat or Surrender.

A hero may gain 'free' experience by visiting a Learning Stone or a Dungeon town with a Battle Scholar Academy built. One can also 'pay' for experience at a Tree of Knowledge, an Altar of Sacrifice or by visiting Sirens. Treasure Chests give a choice of experience and Gold. Pandora's Boxes and Events might also give Experience.

Experience levels

Here is the list of all values of experience for all levels

Level	Experience
1	0
2	1,000
3	2,000
4	3,200
5	4,600
6	6,200
7	8,000
8	10,000
9	12,200
10	14,700
11	17,500
12	20,600
13	24,320
14	28,784
15	34,140
16	40,567
17	48,279
18	57,533
19	68,637
20	81,961
21	97,949
22	117,134
23	140,156
24	167,782
25	200,933
26	240,714
27	288,451
28	345,735
29	414,475
30	496,963
31	595,948
32	714,730
33	857,268
34	1,028,313
35	1,233,567
36	1,479,871
37	1,775,435
38	2,130,111
39	2,555,722
40	3,066,455
41	3,679,334
42	4,414,788
43	5,297,332
44	6,356,384
45	7,627,246
46	9,152,280
47	10,982,320
48	13,178,368
49	15,813,625
50	18,975,933
51	22,770,702
52	27,324,424
53	32,788,890
54	39,346,249
55	47,215,079
56	56,657,675
57	67,988,790
58	81,586,128
59	97,902,933
60	117,483,099
61	140,979,298
62	169,174,736
63	203,009,261
64	243,610,691
65	292,332,407
66	350,798,466
67	420,957,736
68	505,148,860
69	606,178,208
70	727,413,425
71	872,895,685
72	1,047,474,397
73	1,256,968,851
74	1,508,362,195
75	1,810,034,207