Collect 100 ant heads to unlock the "Rainbow Blood" option on the cheat menu.

Collect 200 ant heads to unlock the "Jet Force Kids" option on the cheat menu. Enable this option to unlock the kid version of the game's characters.

Collect 300 ant heads to unlock the "Ants Into Pants" option on the cheat menu. Enable this option to get stick figures with large pants as enemies.

Make contact with the hidden Totem Pole with Vela in Goldwood.

Make contact with the hidden Totem Pole in SS Anubis (Generator Room 2F).

Make contact with the hidden Totem Pole with Juno in Ichor (Military Base).

Make contact with the hidden Totem Pole in Spawn Ship (Cargo Sewer).

Play as Lupus and collect the Magenta Key in Eschebone (Thorax. left intestine). Then, make contact with the hidden Totem Pole with Lupus in Sekhmet (Channel Area).

Collect the Mine Key. Then, make contact with the hidden Totem Pole with Vela in Rith Essa (Mine).

Make contact with the hidden Totem Pole with Lupus in Tawfret (Treehut).

Make contact with the hidden Totem Pole with Vela in Tawfret (Tomb).

Make contact with the hidden Totem Pole with Lupus in Sekhmet (hover across the Spiral Walkway).

Make contact with the hidden Totem Pole with Juno in Mizar's Palace.

Obtain an expert rank with Floyd on all Floyd levels.

Make contact with the hidden Totem Pole in Cerulean Holding Room.

Make contact with the hidden Totem Pole as Vela in Rith Essa Waterfalls.

Collect powered jetpacks. Then, make contact with the hidden Totem Pole in Walkway Station.

Make contact with the hidden Totem Pole in Space Station Basement.

Obtain a gold rank on the Goldwood Floyd level.

Obtain a gold rank on the Eschebone Floyd level.

Obtain a first place score on Jeff And Barry Arcade Racing at Ichor Arcade.

Obtain a first place score on Jeff And Barry Arcade Racing II at Ichor Arcade.

Obtain a first place score on both Jeff And Barry Arcade Racing machines at Ichor Arcade.

Finish in first place in the races at Mizar's Palace.

Accomplish the following tasks during the game to unlock different sequences on the title screen:

Rescue Vela (Juno and Vela run on their ship)
Put Floyd back together (Juno and Vela run and Floyd flying on their ship)
Have Lupus (All characters run on their ship)
Defeat Mizar once (All characters wearing upgraded armor run in Mizars Palace)
Defeat Mizar for the final time (Juno, Vela, and Lupus wearing regular armor walking down a runway on Earth)

Avoid getting hit by flying objects

When reaching a section with small flying objects, run behind a tree and repeatedly run sideways to avoid getting hit.

Collect out of reach gems

Shoot gems that are out of reach to bring them within range.

Refill ammunition

Switch to the shotgun, pistol or machine gun if running low on ammunition and run over the bodies of dead enemies to collect more bullets for that weapon. To refill the flame thrower, shoot Tribals once to force them to drop their lanterns without killing them. Collect the lanterns to use as flame thrower ammunition.

Special abilities

Juno can walk on fire (lava), Vela can swim, and Lupus can hover.

Hover with jetpack

Press C-Down to hover with the jetpack. Note: This consumes less fuel then actively flying.

Quick character change

At the map screen, press C-Left or C-Right to quickly change the character icons.

Super jump

Hold C-Up to perform a super jump.

Hear Lupus howl

While playing as Lupus, press C-Down.