Sliding Worms aren´t the Grave Digger to not create too much confusion:
Sliding Worms (スライディングワーム, suraidingu-wāmu?) are the parasitic offspring produced by Grave Diggers. They were encountered by survivors during the Raccoon City Destruction Incident.[1] The Grave Digger reproduces by laying eggs in the sewers and inside the ground, often in bunches of a hundred...
residentevil.fandom.com
We still have to see them, so bye bye wormies. Probably.
Confirmed unlocks (I also saw all of these 2 days ago but my French ain´t too hot):
- Jill STARS Costume (2000 p)
- Recovery Coin (4000 p) 2 exist
- Defense Coin (4000 p) 2 exist
- Attack Coin (4000 p) 2 exist
- Reloading Press (4000 p)
- Chris Redfield's STARS Combat Manual (6400 p, makes perfect dodge much easier)
- Hook (2800 p, so you don´t need to find it anymore)
- Bolt Cutters (2800 p, so you don´t need to find it anymore)
- Satchel (4800 p, increases inventory space) 2 exist
- Hot Dogger (7200 p)
- Samurai Edge (5600 p)
- MUP Pistol (8000 p, infinite ammo)
- Rai-Den (12000 p, infinite ammo)
- CQBR Assault Rifle (28400 p, infinite ammo)
- Rocket Launcher (62400 p, infinite ammo)
Maybe more if you do the harder difficulties. I, for example, don´t see the grenade/mine launcher listed and it´s in the game. And who knows how the art unlocks or the bubble heads work.