Concentrate

Barbarian skill · Combat Skills

Concentrate is a Barbarian skill in the Combat Skills tree in Diablo II: Resurrected. Attack that is not interruptible and improves attack rating and defense. It needs character level 18 and the skill Stun.

Synergies

+5% Damage per levelfrom Bash
+10% Damage per levelfrom Battle Orders
+1% Magic Damage per levelfrom Beserk

By skill level

Level	+% Defense	+% Attack	+% Damage
1	100	60	70
2	110	70	75
3	120	80	80
4	130	90	85
5	140	100	90
6	150	110	95
7	160	120	100
8	170	130	105
9	180	140	110
10	190	150	115
11	200	160	120
12	210	170	125
13	220	180	130
14	230	190	135
15	240	200	140
16	250	210	145
17	260	220	150
18	270	230	155
19	280	240	160
20	290	250	165

Other Combat Skills skills

Bash · Leap · Double Swing · Stun · Double Throw · Leap Attack · Frenzy · Whirlwind · Berserk

Game data: patch 3.3 (Reign of the Warlock), from the game's own files · updated 23 October 2026

Level	+% Defense	+% Attack	+% Damage
1	100	60	70
2	110	70	75
3	120	80	80
4	130	90	85
5	140	100	90
6	150	110	95
7	160	120	100
8	170	130	105
9	180	140	110
10	190	150	115
11	200	160	120
12	210	170	125
13	220	180	130
14	230	190	135
15	240	200	140
16	250	210	145
17	260	220	150
18	270	230	155
19	280	240	160
20	290	250	165

Level	+% Defense	+% Attack	+% Damage
1	100	60	70
2	110	70	75
3	120	80	80
4	130	90	85
5	140	100	90
6	150	110	95
7	160	120	100
8	170	130	105
9	180	140	110
10	190	150	115
11	200	160	120
12	210	170	125
13	220	180	130
14	230	190	135
15	240	200	140
16	250	210	145
17	260	220	150
18	270	230	155
19	280	240	160
20	290	250	165

Level	+% Defense	+% Attack	+% Damage
1	100	60	70
2	110	70	75
3	120	80	80
4	130	90	85
5	140	100	90
6	150	110	95
7	160	120	100
8	170	130	105
9	180	140	110
10	190	150	115
11	200	160	120
12	210	170	125
13	220	180	130
14	230	190	135
15	240	200	140
16	250	210	145
17	260	220	150
18	270	230	155
19	280	240	160
20	290	250	165