Area Attack Part 1

Add this game-feel effect to my 2D game: Area Attack — Shockwave Ring.

Reference scene (context only — map it onto my own characters and sizes):
A top-down 2D horde-survival arena. Art is pixel art: the hero (12×13 art pixels) is drawn at 4px (48×52px) and stands in the center; orange slimes (16×12 art pixels at 3px, 48×36px) swarm toward him from every side. All sizes below are screen pixels at that scale — scale them to your own sprite size. The ground is seen from above, so every circle is an ellipse squashed to 50% height. Times are seconds, t = 0 is the moment of the area attack. Enemies come in waves of 6. Each wave spawns off-screen at radius 280px and walks straight in over 2.6s (wobbling ±0.08 rad in angle and hopping 3px), reaching the attack radius 96px exactly at t = 0, so three waves are always on the way and the field never empties. Each wave's 6 angles are spread evenly around the hero with a small random offset, and the whole pattern rotates 0.83 rad per wave. Every second the hero releases an area attack and the 6 enemies at radius 96px die. Unless an effect below says otherwise, a dying enemy flashes white and squashes (x 1→1.4, y 1→0.4, fading in 0.08s) and bursts into 7 orange #FF7A3D / cream #fff6d8 squares that fly 6→32px out and fade in 0.3s. 2 of the 6 drop a mint #5BE3B0 XP gem (7×8 art pixels at 4px with a soft mint glow) that hops 12px, waits, and is pulled into the hero from t = 0.55 to 0.75 (easeInCubic, shrinking to 60%). Draw everything sorted by foot y so nearer enemies overlap farther ones. Palette: orange #FF7A3D, gold #FFC24B, mint #5BE3B0, cream #fff6d8, outline #1a1014.

The effect:
At t = 0 flash the hero white (alpha 1 → 0 over 0.06s). …

The rest of this prompt — exact sizes, easing, colors and particle counts — and full prompts 2–6 are in the pack.