Mach-X 1.5.0 release notes

New

A new boot cinematic: an atomic detonation over a blacked-out city, with a fireball, rolling mushroom cap, dusty stem and base surge (softened when Flash effects are off).
The nuke now clears every non-boss enemy and all enemy bullets on screen, takes 25% off bosses, white-outs the screen with a shock ring and ash fallout, leaves a permanent glassed crater, has its own vibration pattern, and works for co-op guests too.
Six extra maps replace the portal worlds, each opening when its parent world is cleared: Scapa Flow, Narvik Fjord, Kasserine Pass, Ruhr Firestorm, Ironbottom Sound and Normandy Bocage. They appear in an EXTRA MAPS section.
Rotor Wingman gets a Napalm Firewall upgrade (helicopters circle you and lay a burning ring that eats enemy rounds) and meaner gunship art.
Searchlights are now real carbon-arc beams by day and night, with a ground pool, dust motes and lit enemies.
The tornado is a dusty layered funnel with a cloud base, skirt, flung debris and spinning victims.

The Sonic, Frost and Energy classes are retired, and 17 weapons are replaced by WW2 kit: Hedgehog Mortar, Parafrag Bombs, Taran Ram, AP-Incendiary Rounds, Parachute & Cable, Cookie Blockbuster, VT Proximity Shells, Molotov Breadbasket, Schrage Musik, Long Aerial Mines, .50 Cal Wing Guns, Defiant Turret, Tsetse 57 mm, Hispano 20 mm, HE-I Shell Fan, Flak Ring and Wing Cannon Salvo. Numbers carry over and old saves are migrated.
About 45 item and synergy names become WW2 too (for example Cryo Rounds became Suppressive Fire and Stormheart became Flak Battery).
Chain hits draw as straight ricochet tracers instead of jagged lightning.
Neon Nights is now Blackout Harbour, Crystal Depths is Jostedal Glacier, Edge of Space is Alpine Bomber Stream and Aurora Reach is Lapland Ice Field. The Void paint is now Night Fighter.
Portals are removed, and portal achievements now count extra maps flown. The hidden landmark is always the airstrip.
Bosses look more aggressive and lifelike, with shading, heavier forward guns and tank barrels with muzzle brakes, glowing exhaust, searchlights on night raiders, brass casings, and sparks and smoke below 60% HP.

Outposts and flak pits are redrawn as dug-in WW2 posts per biome with damaged, ruined and defended states, a live quad mount tracking planes, and a flag run up when defended.
Pilot outfits re-dye only the flight suit, with a fabric and photo grade and a frame material per outfit.
The hangar models are fixed: the Gemini has two fuselages, the P-38 family has booms with engines, the Meteor, A-10, Me 262 and Do 335 get tricycle gear, and the missing engines and props are back.
The Breadbasket dispenser is a bigger finned casing with stencil bands and a ground shadow.

The Harmonised Guns item name fits the run-over list.
Train rails no longer cross or overlap, and the HUD chips no longer overlap the minimap.