Beat the epilogue with secret ending

Collect all the puzzle pieces

Get A+ on all the chapters

Hit two enemies with the same weapon in one throw

Unlock all weapons

Find Jones the Crocodile

Die 1000 times

Beat the epilogue

Beat the main story

Kill 1989 enemies

Defeat the main game final boss wearing the "Low Budget" Costume for Chai (with guitar) and 808.

Finally get your hands on that gift basket.

Hit an enemy with a weapon bounced against a wall