The Sacred Armour of Antiriad

The Sacred Armour of Antiriad is an action-adventure game published by Palace Software in 1986 for Amstrad CPC, Commodore 64, MS-DOS, TRS-80, and ZX Spectrum.

[1] In 2086, civilization destroys itself in a nuclear Armageddon, as two factions who both develop an anti-radiation battlesuit completely immune to conventional weapons go to war against each other when diplomatic peace talks break down.

Many rebel against the mysterious overlords and one of these rebels, Tal, is instructed by his elders to seek out a legendary armoured suit - the Sacred Armour of Antiriad (the last word being a corruption of "anti-radiation"), which is in fact one of the pre-war battlesuits whose development originally instigated the diplomatic crisis that started the nuclear war.

This armour is rumoured to render the wearer impervious to attack and, with its help, Tal hopes to defeat and overthrow the alien rulers of Earth.

Later, he can find the legendary "Antiriad" armour and wear it to activate his status panel at the bottom of the screen which shows both Tal and the suit's strength, his remaining lives and in-game messages among other things.