Test Subject is an act 3 boss in Slay the Spire 2 that revives twice. In co-op, all three forms are scaled: act 3 boss HP is multiplied by the number of players and by 1.3.
HP by party size
| Players | Multiplier | First form | Second form | Third form | Total |
|---|---|---|---|---|---|
| 1 | ×1 | 100 | 200 | 300 | 600 |
| 2 | ×2.6 | 260 | 520 | 780 | 1560 |
| 3 | ×3.9 | 390 | 780 | 1170 | 2340 |
| 4 | ×5.2 | 520 | 1040 | 1560 | 3120 |
From Ascension 8 the forms have 111, 212 and 313 HP before the co-op multiplier.
What changes at each revive
| Form | Gains |
|---|---|
| First | Adaptable (revives when defeated) and Enrage |
| Second | Painful Stabs: each time you take unblocked attack damage, a Wound is shuffled into your discard pile |
| Third | Nemesis: gains 1 Intangible at the end of every other turn. Adaptable is removed, so this form dies for good |
Doom removes Test Subject only in its third form.
Other co-op scaling in this fight
Enemy Block and some enemy powers are multiplied by the same factor. See co-op scaling and act 3 bosses.