XP

XP (short for experience) is collected to level up.

After collecting a certain amount of XP, the player levels up and can pick a new upgrade or synergy out of a random selection of 5 (or 4 when playing on Darkness level 9+). During the level up process, the game pauses and afterwards all enemies are pushed away from the player.

XP can be dropped from enemies: Every Small enemy drops an XP orb worth one XP. Elite enemies drop a chest containing 36 XP (in addition to a Character Upgrade). Bosses do not drop any XP.

Certain upgrades can increase your XP gain, or trigger special effects when you collect XP orbs:

Name	Img	XP	Effects	Type
Excitement			Pickup Range +20% After picking up XP orb, Fire rate +35% for 1s	Upgrade
Recharge			Pickup Range +20% Each XP orb pickup has a 10% to refill 1 ammo	Upgrade
Quick Learner		+40%	Increase experience gain by 40%	Shana's Upgrade
Growth		+20%	You heal 1 HP every 5th level. Gain 4% more XP per rank. (20% max)	Rune
Momentum			After picking up XP, gain Move Speed +7% per rank for 1 second. (+35% max)	Rune

Level-up formula

Required XP to reach the specified level:

Level	Required XP
1-19	10 * level - 5
20	16 * level - 8
21-39	13 * level - 6
40-59	16 * level - 8
60+	level²

Table

The table below lists the amounts of XP required for leveling up.

Level	Required XP to level up	Cumulative
1	15 XP	15 XP
2	25 XP	40 XP
3	35 XP	75 XP
4	45 XP	120 XP
5	55 XP	175 XP
6	65 XP	240 XP
7	75 XP	315 XP
8	85 XP	400 XP
9	95 XP	495 XP
10	105 XP	600 XP
11	115 XP	715 XP
12	125 XP	840 XP
13	135 XP	975 XP
14	145 XP	1120 XP
15	155 XP	1275 XP
16	165 XP	1440 XP
17	175 XP	1615 XP
18	185 XP	1800 XP
19	195 XP	1995 XP
20	328 XP	2323 XP
21	280 XP	2603 XP
22	293 XP	2896 XP
23	306 XP	3202 XP
24	319 XP	3521 XP
25	332 XP	3853 XP
26	345 XP	4198 XP
27	358 XP	4556 XP
28	371 XP	4927 XP
29	384 XP	5311 XP
30	397 XP	5708 XP
31	410 XP	6118 XP
32	423 XP	6541 XP
33	436 XP	6977 XP
34	449 XP	7426 XP
35	462 XP	7888 XP
36	475 XP	8363 XP
37	488 XP	8851 XP
38	501 XP	9352 XP
39	514 XP	9866 XP
40	648 XP	10514 XP
41	664 XP	11178 XP
42	680 XP	11858 XP
43	696 XP	12554 XP
44	712 XP	13266 XP
45	728 XP	13994 XP
46	744 XP	14738 XP
47	760 XP	15498 XP
48	776 XP	16274 XP
49	792 XP	17066 XP
50	808 XP	17874 XP
51	824 XP	18698 XP
52	840 XP	19538 XP
53	856 XP	20394 XP
54	872 XP	21266 XP
55	888 XP	22154 XP
56	904 XP	23058 XP
57	920 XP	23978 XP
58	936 XP	24914 XP
59	952 XP	25866 XP
60	3721 XP	29587 XP
61	3844 XP	33431 XP
62	3969 XP	37400 XP
63	4096 XP	41496 XP
64	4225 XP	45721 XP
65	4356 XP	50077 XP
66	4489 XP	54566 XP
67	4624 XP	59190 XP
68	4761 XP	63951 XP
69	4900 XP	68851 XP
70	5041 XP	73892 XP
71	5184 XP	79076 XP
72	5329 XP	84405 XP
73	5476 XP	89881 XP
74	5625 XP	95506 XP
75	5776 XP	101282 XP
76	5929 XP	107211 XP
77	6084 XP	113295 XP
78	6241 XP	119536 XP
79	6400 XP	125936 XP
80	6561 XP	132497 XP
81	6724 XP	139221 XP
82	6889 XP	146110 XP
83	7056 XP	153166 XP
84	7225 XP	160391 XP
85	7396 XP	167787 XP
86	7569 XP	175356 XP
87	7744 XP	183100 XP
88	7921 XP	191021 XP
89	8100 XP	199121 XP
90	8281 XP	207402 XP
91	8464 XP	215866 XP
92	8649 XP	224515 XP
93	8836 XP	233351 XP
94	9025 XP	242376 XP
95	9216 XP	251592 XP
96	9409 XP	261001 XP
97	9604 XP	270605 XP
98	9801 XP	280406 XP
99	10000 XP	290406 XP
100	10201 XP	300607 XP
...	...	...