Talent points are gained by using Cubes obtained through both standard and extreme Hall of Chaos Dungeons.  Dungeons will reward 1, 2, or 5 Cubes of a specific type per run.  The amount of Cubes gained is not tied to how many points you score, or the time in which you clear the zone.

The increases are the same for both Adventures and Duels upgrades.

LevelATK UpDEF UpHP UpCubes RequiredOre RequiredGold Cost
1+15+7+33 x2 x2,000
2+31+15+67 x2 x2,000
3+46+22+101 x2 x3,000
4+62+30+134 x3 x3,000
5+77+38+168 x3 x3,000
6+93+45+202 x4 x2 x4,000
7+108+53+235 x4 x4 x4,000
8+124+60+269 x5 x6 x5,000
9+139+68+303 x5 x8 x5,000
10+155+76+337 x6 x10 x6,000
11+170+83+370 x6 x12 x6,000
12+186+91+404 x7 x14 x7,000
13+201+98+438 x7 x16 x7,000
14+217+106+471 x8 x18 x8,000
15+232+115+505 x8 x20 x8,000
16+248+121+539 x10 x2 x10,000
17+263+129+572 x12 x4 x12,000
18+279+136+606 x14 x6 x14,000
19+294+144+640 x16 x8 x16,000
20+310+152+674 x20 x10 x20,000