---

All answers having "Free-for-all" as clue:

4 Character Answers:

---

RIOT



5 Character Answers:

---

BRAWL

MELEE

SCRAP

SETTO



6 Character Answers:

---

AFFRAY

FRACAS

SHINDY

TUSSLE



10 Character Answers:

---

DONNYBROOK

OPENSEASON



11 Character Answers:

---

AMANSEASONS

BATTLEROYAL

DISTURBANCE

DONALDBROOK



15 Character Answers:

---

OPENCOMPETITION