Progression/Unlock System:

• F1 (possess) unlocks at 100,000 high score.
• F3 (sidekick) unlocks at 250,000 high score.
• F2 (invader) unlocks at 500,000 high score.
• F8 (sandbox) unlocks at 1,000,000 high score.
• Unlocks persist between sessions via existing savedata.ini highscore.
• Hint text added to demo mode draw GUI — stacks vertically, flashes, only shows when watching bot.
• "F1 TO POSSESS", "F3 TO JOIN", "F2 TO INVADE", "F8 TO SANDBOX" shown as each tier unlocks.

Sandbox Enemy Horde (F4):

• F4 toggles horde on/off.
• "HORDE ENABLED" / "HORDE DISABLED" notification text appears for 2 seconds when toggled.
• Enemies scatter when toggled off.
• Enemy cap defaulted to 20, adjustable with +/- keys (min 10, max 100).
• Cap change shows "ENEMY CAP: X" notification text for 2 seconds.
• All notification text uses same font/position/style.
• sandbox_cap_display_text variable added to handle both horde and cap messages with same display system.

Bug Fixes:

• Fixed obj_summon_santa crashing when all enemies die before he despawns — now sets dead = true and triggers despawn animation cleanly.
• Fixed godmode not working in sandbox mode by updating _is_controlled condition in all enemy and attack hitbox collision events.
• Fixed enemies targeting invader bots by adding !is_invader_bot to enemy targeting logic.
• Fixed screen flash showing when sandbox bots are hit.
• Fixed hallucinate/berserk screen effect not showing in sandbox mode.
• Fixed hallucinate timer not counting down in sandbox mode.
• Fixed global.sandbox_mode and global.sandbox_enemies not resetting on all title screen return paths.
• Fixed press_attack_2 crash caused by obj_game auto-creating player instances in sandbox mode.