Heroes Upgrade Requirements (Antitoxins, Stars, Skill Badges)

In Last Asylum Plague, you can access three types of upgrades on a hero’s page: Stats, Stars, and Skills.

Stat upgrades require Antitoxin, and a hero’s level can go up to level 150. The second type is Star upgrades, which require hero-specific shards or hero omni shards. These upgrades also increase stats, but they also unlock new skills and higher skill levels.

The third type is Skill upgrades, which require Skill Badges. These let you upgrade skills to higher levels, but you must first reach the required hero star level to unlock upgrades for certain skill levels.

Level Upgrades (Antitoxins)

Hero Level	Antitoxin
2	100
3	200
4	300
5	500
6	700
7	900
8	1100
9	1300
10	1500
11	2100
12	2700
13	3300
14	3900
15	4700
16	5500
17	6300
18	7100
19	7900
20	8700
21	9700
22	10 700
23	11 700
24	12 700
25	13 900
26	15 100
27	16 300
28	17 500
29	18 700
30	19 900
31	21 900
32	23 900
33	25 900
34	27 900
35	29 900
36	31 900
37	33 900
38	35 900
39	37 900
40	39 900
41	41 900
42	43 900
43	45 900
44	47 900
45	137 900
46	227 900
47	317 900
48	407 900
49	497 900
50	587 900
51	677 900
52	767 900
53	857 900
54	947 900
55	1 050 000
56	1 150 000
57	1 250 000
58	1 350 000
59	1 450 000
60	1 550 000
61	1 650 000
62	1 750 000
63	1 850 000
64	1 950 000
65	2 500 000
66	3 000 000
67	3 600 000
68	4 200 000
69	4 800 000
70	5 500 000
71	6 000 000
72	6 700 000
73	7 200 000
74	7 800 000
75	8 400 000
76	9 100 000
77	9 700 000
78	10 200 000
79	10 900 000
80	11 800 000
81	12 700 000
82	13 600 000
83	14 500 000
84	15 400 000
85	16 300 000
86	17 200 000
87	18 100 000
88	19 000 000
89	19 900 000
90	20 800 000
91	21 700 000
92	22 600 000
93	23 500 000
94	24 400 000
95	26 100 000
96	27 800 000
97	29 500 000
98	31 200 000
99	32 900 000
100	34 600 000
101	36 300 000
102	38 000 000
103	39 700 000
104	41 400 000
105	43 100 000
106	44 800 000
107	46 500 000
108	48 200 000
109	49 900 000
110	51 600 000
111	53 300 000
112	55 000 000
113	56 700 000
114	58 400 000
115	60 700 000
116	63 000 000
117	65 300 000
118	67 600 000
119	69 900 000
120	72 200 000
121	74 500 000
122	76 800 000
123	79 100 000
124	81 400 000
125	83 700 000
126	86 000 000
127	88 300 000
128	90 600 000
129	92 900 000
130	96 500 000
131	100 100 000
132	104 000 000
133	108 000 000
134	112 000 000
135	116 000 000
136	120 000 000
137	124 000 000
138	128 000 000
139	132 000 000
140	136 000 000
141	140 000 000
142	144 000 000
143	148 000 000
144	152 000 000
145	156 000 000
146	160 000 000
147	164 000 000
148	168 000 000

Star Upgrades (Shards)

Stars	Shards
0.2	2
0.4	2
0.6	2
0.8	2
1	2
1.2	3
1.4	3
1.6	3
1.8	3
2	3
2.2	4
2.4	4
2.6	4
2.8	4
3	4
3.2	6
3.4	6
3.6	6
3.8	6
4	6
4.2	8
4.4	8
4.6	8
4.8	8
5	8
5.2	12
5.4	12
5.6	12
5.8	12
6	12
6.2	25
6.4	25
6.6	25
6.8	25
7	25
7.2	35
7.4	35
7.6	35
7.8	35
8	35
8.2	40
8.4	40
8.6	40
8.8	40
9	40
9.2	60
9.4	60
9.6	60
9.8	60
10	60

Skill Upgrades (Skill Badges)

Skill Level	Badges
2	50
3	100
4	150
5	300
6	450
7	600
8	750
9	900
10	1200
11	1500
12	1800
13	2100
14	2400
15	3100
16	3800
17	4500
18	5200
19	5900
20	6900
21	7900
22	8900